NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense. All accessories used with this board must meet FCC certification to maintain compliance of this equipment.

NOTE:. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by this manual for compliance could void the user’s authority to operate the equipment.

THIS DOCUMENT This work is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/bysa/3.0/ or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA. All derivative works are to be attributed to Gerald Coley of BeagleBoard.org. For more information, see http://creativecommons.org/license/resultsone?license_code=by-sa For any questions, concerns, or issues submit them to gerald@BeagleBoard.org

Page 2 of 164

REF: BB_SRM_xM

BeagleBoard-xM System Reference Manual

Revision C.1.0

BEAGLEBOARD DESIGN These design materials referred to in this document are *NOT SUPPORTED* and DO NOT constitute a reference design. Only “community” support is allowed via resources at BeagleBoard.org/discuss.

THERE IS NO WARRANTY FOR THE DESIGN MATERIALS, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE DESIGN MATERIALS “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE DESIGN MATERIALS IS WITH YOU. SHOULD THE DESIGN MATERIALS PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. We mean it; these design materials may be totally unsuitable for any purposes.

Page 3 of 164

process. the Warnings and Restrictions notice in the User’s Guide prior to handling the product.S. EXPRESSED.org covering or relating to any machine.org. restricted substances (RoHS). SPECIAL. The user assumes all responsibility and liability for proper and safe handling of the goods. recycling (WEEE). Further. please contact visit BeagleBoard. FCC. specifically. including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards.A. the board/kit may be returned within 30 days from the date of delivery for a full refund. As such. marketing-.org environmental and/or safety programs. it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. #100 Richardson. OR STATUTORY.org to be a finished end-product fit for general consumer use. For additional information on BeagleBoard. or combination in which such BeagleBoard. INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.
Page 4 of 164
.org from all claims arising from the handling or use of the goods. OR CONSEQUENTIAL DAMAGES. DEMONSTRATION. INCIDENTAL.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE. customer product design.org currently deals with a variety of customers for products. Due to the open construction of the product.org assumes no liability for applications assistance. BeagleBoard. TX 75081
U.org products or services might be or are used. CE or UL. and therefore our arrangement with the user is not exclusive.0
BeagleBoard. software performance. This notice contains important safety information about temperatures and voltages.org 1380 Presidential Dr. Please read the User’s Guide and. the user indemnifies BeagleBoard. No license is granted under any patent right or other intellectual property right of BeagleBoard. and therefore may not meet the technical requirements of these directives or other related directives. or infringement of patents or services described herein. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES. BeagleBoard. IMPLIED. Should this evaluation board/kit not meet the specifications indicated in the User’s Guide. and/or manufacturing-related protective considerations. the goods being provided are not intended to be complete in terms of required design-. This evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility. NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT. Persons handling the product(s) must have electronics training and observe good engineering practice standards.org provides the enclosed product(s) under the following conditions:
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT. Mailing Address:
BeagleBoard.1. OR EVALUATION PURPOSES ONLY and is not considered by BeagleBoard.

org/support/rma
Page 5 of 164
. If no issue is found or express return is needed. All boards will be returned via standard mail if an issue is found.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. please visit BeagleBoard. exposure to water.
Before returning the board. abuse. the customer will pay all shipping costs. please request an RMA at http://beagleboard.1.org/support
Please refer to sections 12 and 13 of this document for the board checkout procedures and troubleshooting guides. This warranty does not cover any problems occurring as a result of improper use. excessive voltages. modifications. To return a defective board. or accidents.0
WARRANTY: The BeagleBoard is warranted against defects in materials and workmanship for a period of 90 days from purchase.

1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. This is a very detailed section that goes into the design of each circuit on the board. The processor used on the BeagleBoard-xM is compatible with several Cortex A8 processors manufactured by Texas Instruments.0– Specification Provided here are the features and electrical specifications of the BeagleBoard.0– Connector Pinouts and Cables The section describes each connector and cable used in the system. For the remainder of this document the DM3730 will be referred to as the processor. It is not intended to provide detailed documentation of the processor or any other component used on the board. AM3715. Section 6. a low cost ARM Cortex A8 board supported through BeagleBoard. Section 4.0– Change History Provides tracking for the changes made to the System Reference Manual.0-Product Contents Describes what the BeagleBoard package looks like and what is included in the box. Currently.
The key sections in this document are: Section 2.
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. purchase cables. Section 9. Section 8. Section 7. The key difference between the AM3715 and the DM3730.0
1.0– Definitions and References This section provides definitions for commonly used terms and acronyms.org. This document provides detailed information on the overall design and usage of the BeagleBoard from the system level perspective. Section 5.0– Connections Covered here is how to connect the various cables to the BeagleBoard.0
Introduction
This document is the System Reference Manual for the BeagleBoard-xM. is that the DSP is not included on the AM3715. can also be found on the TI website.0– System Architecture and Design This section provides information on the overall architecture and design of the BeagleBoard. Additional information for the ARM only version. It is expected that the user will refer to the appropriate documents for these devices to access detailed information. This will allow the user to create cables. the processor is a DM3730 processor manufactured and sold by Texas Instruments and information on this can be found at the TI website. or to perform debugging as needed.0– Overview This is a high level overview of the BeagleBoard. Section 3.

BeagleBoard Components This section provides information on the top and bottom side silkscreen of the BeagleBoard showing the location of the components.
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.BeagleBoard Schematics These are the schematics for the BeagleBoard and information on where to get the PDF and OrCAD files. Section 17.Known Issues This section describes the known issues with the current revision of the BeagleBoard and any workarounds that may be possible. Section 14.0 – Troubleshooting Here is where you can find tips on troubleshooting the setup of the BeagleBoard.0 – Mechanical Information is provided here on the dimensions of the BeagleBoard. Section 16.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. It does not guarantee that these devices will work on all OS implementations.0. Section 13. but does provide an idea of the types of cables and accessories that can be supported and how to find them.0.0. Section 12. It also provides a definition of what they need to be. This is not an exhaustive list. Section 11.BeagleBoard PCB Information This section describes where to get the PCB file information for the BeagleBoard. Section 15..1.0
Section 10.0– BeagleBoard Accessories Covered in this section are a few of the accessories that may be used with BeagleBoard.0.Bill Of Material This section describes where to get the latest Bill of Material for the BeagleBoard.0.

2 Software Changes
Following are the changes to the SW. o A demo version of the Angstrom desktop distribution. No electrical difference. For a detailed description of the issues present in the ES1. o Changed routing on R66 and R68 to make them separate paths instead of parallel. o Slightly modified PCB layout (Rev B) to correct the following o Changed silkscreen on L12 to R159 to reflect the usage of a resistor instead of an inductor.0
MMC3 Expansion Header McBSP2 Expansion Header 2. No electrical difference.
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.0 to ES1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Yes Yes No No
Revision C. only for expansion. –xM Revision A2 vs.1. Loaded with a zero ohm resistor.1 revision. No electrical difference.2. They include support for the 512MB DDR and the removal of the NAND from the –xM board. o Changed R120 to 0603 package to align with arts purchased. Not used on board. Resistor is not loaded on Revision A3. o Moved DVI_PUP pin to the TPS65950 GPIO2. o Added R156 to remove the required lifting of U18 pin 4. Resistor was used on Rev A2.4 –xM Revision A3 vs. No electrical difference. These will work on any Beagle made. No electrical difference. No electrical difference. however. –xM Revision B
The only change from Rev –A3 to the Rev B was the replacement of the processor form ES1.3
There were no major hardware feature changes between the Rev A2 and Rev A3 revisions. updated SW can be used to turn off the DVI interface by taking the pin LO. o Added 33 ohm resistor R157 in series with MMC clock line. There may be issues with other distributions until such time as their code is updated. Electrical change from A2. o Added R158 to allow isolation of drain pin on TPS2141. o Use of a universal Beagle XLoader and UBoot. 2. Below are the differences between the Rev A2 and Rev A3 revisions. No electrical difference. No SW impact and Angstrom kernel. Not populated on Rev A3. –xM Revision A3
2. o Added R160 and R155 as a possible future option.1.

P pin LO to turn it on.2 revision. This will minimize the initial current drain on the board. The HUB will only work in the DC powered mode so this change allows the board to know not to try and initialize the USB Host when under OTG power.pdf . There are no issues resolved by ES1. This includes the HUB.ti. –xM Revision B vs.5
There were seven changes made to the BeagleBoard-xM Rev C version over the Rev B design. o Replacement of the processor from ES1. o Added the ability for the SW to detect when the board is powered from the DC supply or the OTG supply.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. o Changed the default power state of the USB HUB to OFF as an added layer of protection to make sure the USB power rails are off on initial power up. There are no issues resolved by ES1.6 pin on the TPS65950. o Redesigned the overvoltage protection circuit. o Replaced the microSD connector with a new part. and GPIO_173=0.com/lit/er/sprz319a/sprz319a. Status is read from GPIO. GPIO_172=1. SW can turn on the HUB power as needed by setting the TPS65950 LEDA/VIBRA. 2. GPIO171=0.com/lit/er/sprz319a/sprz319a.2 is the latest revision.. We were seeing issues with a small number of boards being damaged on the TPS2054 USB power FET.1 to ES1. please refer to http://focus.6 Definitions
Page 18 of 164
.2 that are anticipated to have any impact on the operation of the BeagleBoard-xM. For a detailed description of the issues present in the ES1.1. Care should be taken not to add high current devices on the USB ports as that will cause the host to shut down the USB port. then the board is powered from the DC jack. The current part was targeted for EOL and a new one was required.pdf . o Fixed capacitor footprint in the PCB layout.1 that are anticipated to have any impact on the operation of the BeagleBoard-xM. If LO. ES1.0
please refer to http://focus. This required a PCB footprint change.2. o Resistor loading was changed to allow for the reading of the Rev C revision by the SW. so a new design was implemented.ti. –xM Revision C
2. Overall operation is the same as the original version with te exception that it is now possible to power the entire board over the USB OTG port.

1.The original version of the board based on the DM3530 BeagleBoard-xM.0
SD.Mobile Dual Data Rate SDRAM.
Page 19 of 164
.Synchronous Dynamic Random Access Memory BeagleBoard. .Small version of the standard SD card MDDR.Secure Digital microSD.The newer version of the board based on the DM3730.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

It is not intended for use in end products.1.0
BeagleBoard Overview
The BeagleBoard is designed specifically to address the Open Source Community. It can be found at http://beagleboard.0
3. The BeagleBoard is on the left and the BeagleBoard–xM is on the right.
Figure 1.
3. The Figure 1 shows pictures of the two different versions. It has been equipped with a minimum set of features to allow the user to experience the power of the processor and is not intended as a full development platform as many of the features and interfaces supplied by the processor are not accessible from the BeagleBoard. Figure 1 is a picture of each of these versions. By utilizing standard interfaces. the BeagleBoard is highly extensible to add many features and interfaces. BeagleBoards will not be sold for use in any product as this hampers the ability to get the boards to as many community members as possible and to grow the community.org/hardware/design . Please refer to the BeagleBoard System Reference Manual for information on that version.1
BeagleBoard Versions
There are two different versions of the beagle in production.
BeagleBoard and BeagleBoard-xM
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. All of the design information is freely available and can be used as the basis for a product. the BeagleBoard and the BeagleBoard–xM. This manual covers the revision A and B of the –xM version only.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

when looking at the BeagleBoard.
4. that additional non volatile memory storage can be added to BeagleBoard by: o Accessing the memory on the uSD card o Use the USB OTG port and a powered USB hub to drive a USB Thumb drive or hard drive. The key function of the POP memory is to provide: o 4Gb MDDR SDRAM x32 (512MB @ 166MHz) Unlike with earlier versions of the board.1. In addition to the power the TPS65950 also provides: o o o o o Stereo Audio Out Stereo Audio in Power on reset USB OTG PHY Status LED
Page 23 of 164
. It is possible however.3V regulator which is used to provide power to the DVI-D encoder and RS232 driver and an additional 3. no other memory devices are on the BeagleBoard.
4.3V regulator to power the USB Hub.2
Processor
The BeagleBoard-xM processor is the DM3730CBP 1GHz version and comes in a . The -00 assembly uses the Micron POP memory and the -01 uses the Numonyx POP memory.
4. POP (Package on Package) is a technique where the memory is mounted on top of the processor.3
Memory
There are two possible memory devices used on the –xM. o Install a thumbdrive into one of the USB ports o Add a USB to Hard Disk adapter to one of the USB ports Support for these devices is dependent upon driver support in the OS.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. but instead see the part number for the memory.4
Power Management
The TPS65950 is used on the BeagleBoard to provide power with the exception of a 3. For this reason.0
The following sections provide more detail on each feature and sections of the BeagleBoard.4mm pitch POP package. you will not find an actual part labeled DM3730CBP.

Figure 2. The ports will not function unless the board is powered by the DC jack.5
HS USB 2.
Page 24 of 164
. There are instances where the PC or laptop does not supply sufficient current to power the board as it does not provide the full 500mA.
USB Y-Cable
The BeagleBoard requires a Y-Cable minAB to USB A cable or as mentioned a single cable can be used if the USB Hub is powered down or not loaded on all of the ports. Figure 2 shows and example of the Y-Cable for the USB. They cannot be powered via the OTG port.0 OTG Port
The USB OTG port can be used as the primary power source and communication link for the BeagleBoard and derives power from the PC over the USB cable. Under this mode the USB HUB will now be powered based on the design changes made to the over volt circuitry.0 Host Ports
On the board are four USB Type A connectors with full LS/FS/HS support. The client port is limited in most cases to 500mA by the PC.0
4. Each port can provide power on/off control and up to 500mA of current at 5V as long as the input DC is at least 3A.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.1.
4.6
HS USB 2. It is possible to take the current supplied by the USB ports to 1A by using a Y cable. Care should be taken not to overload the USB ports as the total power supplied to the ports will not enable full power to all of the USB ports as you can have with the DC power.

9 S-Video Connector
A 4 pin DIN connector is provided to access the S-Video output of the BeagleBoard. DO NOT PLUG IN THE DVI-D CONNECTOR TO A DISPLAY WITH THE BEAGLEBAORD POWERED ON.27mm pitch 2x10 headers are provided to gain access to the LCD signals. This cable or adapter is not provided with the BeagleBoard.5mm standard stereo output audio jack is provided to access the stereo output of the onboard audio CODEC.
Page 25 of 164
. The user must use a HDMI to DVI-D cable or adapter to connect to a LCD monitor. This is a separate output from the processor and can contain different video output data from what is found on the DVI-D output if the software is configured to do it. The default is NTSC.10 DVI-D Connector
The BeagleBoard can drive a LCD panel equipped with a DVI-D digital input. but can be changed via the Software. PLUG IN THE CABLE TO THE DISPLAY AND THEN POWER ON THE BEAGLEBOARD. It does not support the full HDMI interface and is used to provide the DVI-D interface portion only. 4. The audio CODEC is provided inside the TPS65950. DDC2B (Display Data Channel) or EDID (Enhanced Display ID) support over I2C is provided in order to allow for the identification of the LCD monitor type and the required settings. This is the standard LCD panel interface of the processor and will support 24b color output.
4. The BeagleBoard is equipped with a DVI-D interface that uses an HDMI connector that was selected for its small size. This allows for the creation of LCD boards that will allow adapters to be made to provide the level translation to support different LCD panels.1.0
4. 4.7
Stereo Audio Output Connector
A 3.8 Stereo Audio In Connector
A 3.5mm standard stereo audio input jack is provided to access the stereo output of the onboard audio CODEC. A standard HDMI cable can be used when connecting to a monitor with an HDMI connector. It will support NTSC or PAL format output to a standard TV.11
LCD Header
A pair of 1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. 4.

If this LED ever turns on.15
Indicators
There are five green LEDs on the BeagleBoard that can be controlled by the user.13
Reset Button
When pressed and released. The power supply is not provided with the BeagleBoard. causes a power on reset of the BeagleBoard.
Page 26 of 164
.12
microSD Connector
A single microSD connector is provided as a means for the main non-volatile memory storage on the board.0
4. There is also one red LED on the BeagleBoard that provides an indication that the power connected to the board exceeds the voltage range of the board.
4. When the wall supply is plugged in.14
User Button
A button is provided on the BeagleBoard to be used as an application button that can be used by SW as needed.16
Power Connector
Power can be supplied via the USB OTG connector for some application that does not require the USB Host ports. it will remove the power path from the USB connector and will be the power source for the whole board. As there is no NAND boot option on the board.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. this button is no longer needed to force an SD card boot. If you press this button on power up. please remove the power connector and look for the correct power supply in order to prevent damage to the board. A wall supply 5V can be plugged into the DC power jack fro full access to all functions of the board. It is can be used by the UBoot SW to switch between user scripts to allow different boot configurations to be selected as long as that feature is included in the UBoot used.
4. o One on the TPS65950 that is programmed via the I2C interface o Two on the processor controlled via GPIO pins o One Power LED that indicates that power is applied and can be turned off via SW. o One to indicate that power is applied to the onboard USB HUB and can be controlled via the SW. the board will not boot properly. This replaces the 6 in 2 SD/MMC connector found on the BeagleBoard.
4.
4.1.

4. This header is populated on each board.
4. A standard male to female straight DB9 cable may be used or you can use a USB to serial adapter that will plug directly into the board without the need for any other cables.3V. The camera module does not come with the board but can be obtained from Leopard Imaging. DO NOT expose the JTAG header to 3. a straight through non null modem cable is required. the DC supply must be connected as the USB port will be used to provide limited power to the hub at a maximum of 100mA. 2MP. For proper operation of the cameras.0
When using the USB OTG port in the host mode. so the hub must be powered.17
JTAG Connector
A 14 pin JTAG header is provided on the BeagleBoard to facilitate the SW development and debugging of the board by using various JTAG emulators.18
RS232 DB9 Connector
Support for RS232 via UART3 is provided by DB9 connector on the BeagleBoard for access to an onboard RS232 transceiver. This will prevent the power from actually making it to the circuitry on the board and will stay on as long as the power exceeds the voltage specification.
4. Due to multiplexing.19
Main Expansion Header
A single 28 pin header is provided on the board to allow for the connection of various expansion cards that could be developed by the users or other sources.1. A USB to Serial cable can be plugged directly into the Beagle.
Page 27 of 164
.8V Levels are supported.
4. This connector is populated on the board and is ready for the camera module to be installed.20
Camera Connector
A single connector has been added to the BeagleBoard–xM board for the purpose of supporting a camera module. The 100mA is not impacted by having a higher amperage supply plugged into the DC power jack.8V on all signals. Only 1. The supported resolutions include VGA. 3MP. The cable you used on the BeagleBoard will NOT work on the –xM version. The interface is at 1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. the correct SW drivers are required. different signals can be provided on each pin. Unlike on the original version of the Beagle. a RED LED will turn on. If the power is over the voltage specification. and 5MP camera modules. The 100mA is a function of the OTG port itself. Make sure the DC supply is regulated and a clean supply.

0
4. In order to use these signals.35” x 3. This connector is populated on the board.
4.45” Max height: TBM Layers: 6 PCB thickness: . This connector is populated on the board.1.21
MMC3 Expansion Header
New to the BeagleBoard-xM is a 20 pin connector provided to allow access to additional signals including GPIO and the MMC3 port. 4. the audio interface on the TPS65950 must be disabled by the SW.22 McBSP Expansion Header
A 4 pin connector is provided to allow access to the McBSP2 signals for audio applications.062” RoHS Compliant: Yes Weight: TBW
Page 28 of 164
.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.23
BeagleBoard Mechanical Specifications Size: 3..

1. 5.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.0
5.0
Product Contents
Under this section is a description of what comes in the box when the BeagleBoard is purchased.
The -xM Rev C Box
Page 31 of 164
.
Figure 3.1 BeagleBoard In the Box
The final packaged -xM Rev C product will contain the following items: o 1 Box with the following items inside: o 1 BeagleBoard in an ESD Bag o 1 uSD card o 1 uSD Card to MMC Adapter NO CABLES ARE PROVIDED WITH THE BEAGLEBOARD.

5.1.2
Software on the BeagleBoard
There is no NAND flash memory on the board so no SW is preinstalled on the board as it is on the BeagleBoard. It contains all of the code required for the board to boot to an Angstrom validation image.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.3
Repairs
If you feel the board is in need of repair. It can also be used to boot to UBoot by hitting a key during the booting process before it reads the UImage.
Page 32 of 164
.org/support/rma
Do not send the board in for repair until a RMA authorization has been provided. follow the RMA Request process found at http://beagleboard. The BeagleBoard–xM does come with a 4GB microSD card that the board boots from.
-xM Rev C Box Contents
5. You will see a login prompt but no GUI will be visible.0
Figure 4.

the ID pin must be grounded. and any other add-on component or device meets the FCC Part 15 requirements.0
Do not return the board to the distributor unless you want to get a refund. but there may not be enough power supplied by the PC to power all features. such as the USB Host ports and the Ethernet Port. Any changes or modifications to this board that causes the board to no longer comply with the FCC Part 15 requirements voids the user’s rights to use this system.1 Connecting USB OTG
The USB OTG port connects to the PC host and uses a miniAB cable through which power can be provided to the BeagleBoard. monitors. If you use the double ended USB cable. 6. You must get authorization from the distributor before returning the board.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. If the OTG Port is to be used as a Host. PC equipment.
6. power supplies.
Page 33 of 164
. You can power the board from this port.1. Care should be taken to insure that all add-on boards. This means that you must have a 5 pin cable connected to the OTG port on the BeagleBoard and you must use a powered USB HUB.0
BeagleBoard Connections
This section provides an overview of all of the connectors on the BeagleBoard-xM. you should be able to power the board with minimal issues as long as you do not load down the USB Host ports with heavy current devices. This will depend on the current available from the HOST PC. Beagleboard. Figure 5 shows where the cable is connected to the BeagleBoard. The user is responsible for compliance with this statement.org does not handle refunds. Only the use of FCC Part 15 approved devices in the BeagleBoard-xM installation is allowed. There is also an option to ground the ID on the board and is discussed later in this document.

Figure 7. you must have an external DC supply powering the BeagleBoard. The power supply is not provided with the BeagleBoard.3
Connecting DC Power
A DC supply can be used to power the BeagleBoard by plugging it into the power jack.D. It is required that on the BeagleBoard-xM board that an external power supply used if the USB Host is to be used. Connecting anything other than 5V will activate the over voltage circuitry.1. x 9.
DC Power Connection
The power supply must have a 2. The board will not function until the correct power supply is used.0
6. Figure 7 shows where to insert the power supply into the power jack. turning on a red LED.5mm and can be either straight or right angle. but can be obtained from various sources. You need to make sure the supply is a regulated 5V supply.1mm I.D x 5.
Page 36 of 164
. If you are using the USB OTG port in the OTG or host mode.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.5mm O.

you will be required to contact your emulator supplier for the appropriate adapter to be supplied by that manufacturer. Figure 8 shows the connection of the JTAG cable to the BeagleBoard.1. Only the 14pin version of the JTAG is supported and if a 20pin version is needed. There is no overvoltage protection on these pins and the pins connect direct to the processor.
Figure 8.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. It supports 1. If you do this.
BeagleBoard JTAG Connection
DO NOT expose the JTAG header to 3.0
6.4
Connecting JTAG
A JTAG emulator can be used for advanced debugging by connecting it to the JTAG header on the BeagleBoard. the board will be damaged beyond repair and the board will NOT be replaced under any circumstances
Page 37 of 164
.3V.8V only.

The configuration of the DB9 is such that a USB to serial adapter can be plugged direct into the Beagle connector. No null modem cable is required.0
6. a straight through male to female cable is required.
Page 38 of 164
.1.
BeagleBoard Serial Cable Connection
If you are using a standard serial port on the PC. Figure 9 shows where the serial cable is to be installed.
Figure 9. New to the BeagleBoard-xM version is the removal of the 10 pin header and the addition of a female DB9 connector.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. The cable used on the BeagleBoard will not work on the BeagleBoard–xM board.5
Connecting Serial Cable
In order to access the serial port of the BeagleBoard a serial cable is required.

0
6. This cable is not supplied with the BeagleBoard.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.1.
Figure 10. Figure 10 shows the connector for the S-Video cable. BeagleBoard S-Video Connection
Page 39 of 164
.6
Connecting S-Video
An S-Video cable can be connected to the BeagleBoard and from there it can be connected to a TV or monitor that supports an S-Video input.

PLUG IN THE CABLE TO THE DISPLAY AND THEN POWER ON THE BEAGLEBOARD. a HDMI to DVI-D cable is required. This cable is not supplied with BeagleBoard but can be obtained through numerous sources.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.1.7
Connecting DVI-D Cable
In order to connect the DVI-D output to a monitor.0
6.
Figure 11. BeagleBoard DVI-D Connection
DO NOT PLUG IN THE DVI-D CONNECTOR TO A DISPLAY WITH THE BEAGLEBAORD POWERED ON. Figure 11 shows the proper connection point for the cable.
Page 40 of 164
.

Figure 12 shows where the cable connected to the stereo out jack. BeagleBoard Audio Out Cable Connection
Page 41 of 164
.1.
Figure 12.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. can be connected to the BeagleBoard via a 3.5mm jack.0
6. The audio cables are not provided with the BeagleBoard-xM. such as external stereo powered speakers.8
Connecting Stereo Out Cable
An external Audio output device. but can be obtained from just about anywhere.

such as a powered microphone or the audio output of a PC or MP3 player. The audio cables are not provided with the board. Figure 13 shows where the cable is connected to the stereo input jack.5mm jack.1. but can be obtained from several sources. BeagleBoard Audio In Cable Connection
Page 42 of 164
. can be connected to the BeagleBoard-xM via a 3.9
Connecting Stereo In Cable
External Audio input devices.0
6.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.
Figure 13.

1.0
6.
Figure 14. Figure 14 shows the location of each indicator. BeagleBoard Indicator Locations
POWER indicates that power is applied to the board.
Page 43 of 164
. USR0/1 can be used by the SW as needed PMU is controlled from the power management chip and can be connected to a PWM. Each indicator will be described in more detail later in this document.10
Indicator Locations
There are five green and one red indicator on the BeagleBoard. VOLT will turn on when the DC voltage exceeds specification HUB turns on when power is applied to the USB HUB.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

Figure 15. If you do press the User Button on power up. BeagleBoard Button Location
The User button does no affect the boot source of the board as is the case on the BeagleBoard version. the RESET button when pressed will force a board reset and the USER button which can be used by the SW for user interaction.11
Button Locations
There are two buttons on the BeagleBoard-xM.0
6.1. the board will not boot.
Page 44 of 164
. Figure 15 shows the location of the buttons.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

0
6.12
microSD Connection
The microSD is the boot source for the board.1. Figure 16 shows the location of the microSD connector. It uses a push-push connector for the insertion and removal of the microSD card.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.
Figure 16. The connector is mounted on the bottom side of the board. The white silkscreen area on top of the board works as a guide to align the card for insertion.
Page 45 of 164
. BeagleBoard microSD Card Location
The microSD card should be inserted with the writing on the card facing up.

These headers are 2x10 headers with a spacing of .
Figure 17.05 (1. That is the reason only the raw signals are brought out on these headers. Figure 17 shows the location of the LCD headers on the board. How these connectors are used is determined by the design of the adapter board that is connected to them. As different LCD panels have different requirements.1. BeagleBoard LCD Header Location
Adapter boards are becoming available for such things as LCD panels and VGA adapters.0
6.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.13
LCD Connection
There are two headers provided to access the LCD signals on the BeagleBoard-xM.27mm) pitch.
Page 46 of 164
. it is difficult to design an interface that will work with all LCD panels.

Page 47 of 164
. 7.
Figure 18.0
7. BeagleBoard-xM High Level Block Diagram
Figure 19 shows the location of the key components on the board.0
BeagleBoard-xM System Architecture and Design
This section provides a high level description of the design of the BeagleBoard-xM and its overall architecture.1 System Block Diagram
Figure 18 is the high level block diagram of the BeagleBoard-xM.1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

BeagleBoard Major Components
The information found in the remainder of this section describes in detail the architecture and design of the BeagleBoard-xM.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. the names have been truncated to only show the specific functions of that pin as used in the design. o The schematic has been created for each section showing only the pertinent components and their connections. o The pin names differ from the actual schematic.1. You will notice certain things in this section. For ease of reading.0
Figure 19.
Page 48 of 164
.

The NCP349 provides a FLAG output. At power up. The board will not power up if the voltage is in excess of the 5. This is useful to allow the SW to determine that if in the OTG power mode. Also new in the REV C is the fact that the USB 5V defaults to off. Having this default to off provides an additional level of protection. As U31 is always on. connecting power via the OTG port provided 5V to the DC_5V rail which Page 49 of 164
47k
Figure 20.0
7. that the USB Host ports are not available. which alerts the system that a fault has occurred by turning on D13. A low NMOSFET protects the systems connected on the OUT0/1 pins against positive overvoltage. Also new for the Rev C is the ability to power the HUB for the USB OTG port. USB Host circutry power is OFF.1. is the ability to detect when the board is DC powered by reading the nDC_PWR signal. the output is delayed before it is turned on to insure that the voltage is not in excess of 5. New to the Rev C as well.
2 6 nUSBHOST_PWR_EN
6
1
These functions are controlled by the NCP349 device. Overvoltage Protection
2
NCP349MNAE
. This was the reason for the circuit design change.5MM VIO_1V8 VIO_1V8 R138 R144 R131 10K 7 1 6 10K 6 nDC_PWR 10K Q2A RN1907 U33 IN0 IN1 OUT1 OUT0 5 4 3 DC_5V_USB 6 IN0 IN1 OUT1 OUT0 5 4 R121 3 510 DC_IN D13 LTST-C150CKT
RED
GND 2 GND
EN
FLAG
NCP349MNAE
EN
FLAG
10k
On powerup. We were seeing a small number of boards that still had this device sustaining damage.8V max level. a red LED.2
Over Voltage Protection
A new feature found on the BeagleBoard–xM board is the overvoltage protection circuit. The design of this circuit has been changed on the Rev C version of the board and is much simpler and more affective. The primary function of this circuit it to prevent voltage levels in excess of the specification from reaching other circuitry on the board and causing damage to the board. Figure 20 is the diagram of the circuitry design. with EN pin = low. up to 28V.8V. The NCP349 provides overvoltage protection for positive voltage. making sure that the voltage is not connected to the USB power FET.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.
DC_IN DC_5V U31 7 1 P2 2 3 1 CONN_PWR1_2.

The USB supply is sufficient to power the BeagleBoard in most as long as you understand that the USB Host ports will not function.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.0
in turn will supply power to the DC in rail which can then be used to power the HUB as long as U33 is enabled.
7. then the DC supply must also be used. It should also be noted that if an OTG configuration is used.
Page 50 of 164
.3
Power Conditioning
There are two possible sources of the 5V required by the BeagleBoard. for example tying two BeagleBoards together via a UBS OTG cable. Figure 21 is the design of the main power input section. If the OTG port is used as a Host port. both of the BeagleBoards must be powered by the DC supply. It is recommended that a DC supply be used.1. It can come from the USB OTG port connected to a PC or a 5V DC supply.

The higher current limit provides short circuit protection while allowing the peripheral to draw maximum current from the USB bus. It needs to have a 2.1mm plug with a center hot configuration.0
During turn on. This condition could be used on the daughtercard to know that it is OK to supply power onto the expansion bus to power the board. a higher current supply can be used. assuming that the USB ports and expansion headers are likely to be used. The maximum current should not exceed 3A. in the case of the DC voltage. the switch for the USB is enabled. If you plan to use the USB OTG port. You should be careful in doing this. then that indicates that there is no
Page 52 of 164
. If this signal is low. This insures that the 5V from the USB is not connected by disabling the internal FET. the switch current limit increases to 800mA (minimum).1. When in the USB powered mode and no DC supply is connected. a powered hub must be used to support peripherals on the OTG port. the TPS2141 is enabled. the switch is disabled because the ground is removed from pin 5 of the TPS2141.
7. the current limiting is not required.3
DC Source Control
Unlike when powering from the USB OTG port. When the output voltage from the switch reaches about 93% of the input voltage.3. When the DC supply is plugged in. It is possible to provide 5V via the expansion connectors as would be the case from a daughter card to prevent you from having to have two DC supplies. The TPS65950 will be responsible for handling the supply of the VBUS_5V0 rail in the OTG or Host modes. additional current is required. As this is limited to 100mA. In the case where there is no USB plugged in. In the event that a higher DC load is required due to the addition of a Daughtercard or if all the USB host ports need to supply the full 500mA per port. When in the DC mode of operation.3. the switch limits the current delivered to the capacitive load to less than 100 mA.2
Wall Supply Source
A wall supply can be used to provide power to the board. and the DC dummy jack is installed. If you are using the USB HUB or Ethernet interface. there is no 5V available to be routed so the removal of the pullup in pin 5 has no affect.
7. the USB OTG can be used in the Host or Client modes. allowing the power to be supplied to the board from the OTG port through the integrated switch inside the TPS2141.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. it is plugged in. at which point higher current loads can be turned on. you will need to place an unconnected connector into the DC power jack to insure that the DC from the OTG port is not shorted to the 5V supplied via the expansion connector. There is a signal called nUSB_POWER which if a logic level “1” (5V) indicates that there is 5V supplied by the USB OTG port. As long as the DC supply is not connected. A regulated 5V DC supply of at least 2A is required and a rating of 3A is preferred.

10V
GRN PWRLED_R
4.1uF.3V Supply
The TPS2141 has an integrated 3.
7.1.TMS N12
R54 10K
Figure 22.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.0603 3V3_ADJ R10 C207 R9 D5 LTST-C190GKT
VIO_1V8
C204 0.3 Power Section
Page 53 of 164
.
VBAT AUX_3V3 R8 U2 4 LDO_IN LDO_PLDN LDO_OUT 6 LDO_EN ADJ LDO_PG 10 11 9 8 200K.3V LDO which is being used to supply the 3. This means that in order to power the board from the expansion headers.3V Supply design. The 3. AUX 3.3V supply powers the power LED. the user chooses to turn of the power LED.0603
5
10K 6
1 U18A
POWER
R12
2
SN74LVC2G06DCKR
SW_EN
GND PPAD 7 15
SW_PG
TPS2141PWP
U7A
TPS65950 GPIO. It is always possible that at any point a USBOTG cable could be installed.3V supply. It should also be noted. this GPIO pin can be used to turn off the power LED.3V supply can be turned off by activating GPIO1 on the TPS65950 to a 1. the DC dummy jack must be installed and there is a method to verify that condition.3. D5. For this reason. that a large pullup be provided on the daughtercard to make the signal a logic level “1” (5V) to detect the true state of the DC jack. is recommended however.0603 3 2 SW_IN SW_IN SW_OUT SW_OUT SW_PLDN 5 13 12 14 1 330 620K.1%.3V rail controls the serial port power. The input to the LDO is supplied by the main DC_5V. By default the voltage is on. If during a low power mode.1/CD2/JTAG. that the 3.0
DC power connected and there is no USB OTG port connected.1%.3V as required on the BeagleBoard for the DVI-D interface and the UART.7uF.6.3V. Figure 22 is the AUX 3. This insures that the power to the LDO can be supplied by either the USB or the DC wall supply and that the current measurement includes the 3. so this will be powered down as well.4
AUX 3. You will also see that the 3.

The maximum value that can be input to the ADC inputs is based on the setting of the VINTANA2.1 ohms. The reading you get is .10V 10K. So.1uF. There are two pairs of resistors provided on the TPS65950 that measure the voltage on either side of R13.1.5V.3V
TL1963A
R49 12K. that this current reading does not include any current consumed by the USB HUB.6.5V point.OUT voltage rail which defaults to 2.CER.0805
10uF. The resistor.1% C83 U7A TPS65950 N11 P11 ADCIN5 ADCIN3 R52 10K. USB ports. either USB or DC. Please keep in mind. or the Expansion headers.2V
SHDN GND GND ADJ
HDR2_.2K. R13. In order to prevent the voltage levels from exceeding this value a pair of resistors of 12K and 10K is used to scale the voltage down.10V VBAT
4.415V which keeps it below the 2.1 R13 . The voltage drop across R13 will be small as the value of the resistor is 0.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.1% C84 R53 0.6K.1uF.25V.1. For every 100 mA of
Page 54 of 164
.1% 0.0805.1%
RTSO/CLK64K/BERCLK/ADCIN5 CTSI/BERDATA/ADCIN3
Figure 23. the voltage read would be 2.10V VBAT_MAIN J2 1 + 2 C5 C7 0. providing a way to measure the current consumption of the BeagleBoard from the main voltage rails.1% R15 22. is a . These values along with resistance of R13 are used to calculate the current consumption of the board.4
Meter Current Measurement
Jumper J2 is a header that allows for the voltage drop across the resistor to be measured using a meter.1mV per mA of current.0
7.1% R48 12K.
7.5
Processor Current Measurement
The resistor across J2 can also be used to measure the current of the board by reading the voltage drop across R13 from software. This is done via the I2C control bus to the TPS65950 from the processor. Processor Current Measurement
This results in a value that is 46% of the actual value.1x.1 ohm resistor across which the voltage is measured.
DC_5V U3 2 1 3 IN OUT 4 6 5 VBAT_FB R14 56. You will need to make sure you have a sensitive meter to make your measurements. for a maximum value of 5. Figure 24 is the schematic of the measurement circuitry.1uF.

REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. In order to determine the actual power. the input voltage and the voltage drop must be measured.0
current a voltage of .
Page 55 of 164
.01V will be detected.1.

1x.0805
TL1963A
Figure 24.3V C7 0. The TL1963A is a linear low-dropout (LDO) voltage regulator and is thermal shutdown and current limit protected. Figure 25 is the power conditioning section of the BeagleBoard. It has the ability to deliver 1A of current. although this is far and above the requirements of the board. By adjusting the values of R14 and R15.6
VBAT Power Conditioning
This circuitry regulates the DC input to a nominal 4.2K.1 R13 .2V to meet this requirement.7V. This is required in order to meet the maximum DC voltage level as specified by the TPS65950 Power Management device which is 4. U3.2V gives us some margin and meets the nominal 4. the actual voltage can be adjusted if needed.0805.1.6K.7
TPS65950 Reset and Power Management
The TPS65950 supplies several key functions on the BeagleBoard.1% R15 22.CER. to 4.1% J2
4. the TL1963A. which can come from a DC wall supply or the USB.2VDC level.6.1.2V.10V
SHDN GND GND ADJ
HDR2_.2V
1 +
2 C5 10uF.2V rating of the TPS65950. Included in this section are: o o o o Main Core Voltages Peripheral Voltages Power Sequencing Reset Page 56 of 164
. This section covers a portion of those functions centered on the power and reset functions. VBAT Power Conditioning
The TPS65950 provides the main power rails to the board and has a maximum limit of 4.7V on its VBAT input and a nominal of 4.0
7. Using 4.1uF.
7. is used to convert the DC_5V.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.
VBAT_MAIN DC_5V VBAT U3 2 1 3 IN OUT 4 6 5 VBAT_FB R14 56.

2V.3 Processor I2C Control
The various components in the TPS65950 are controlled from the processor via the I2C interface.2 Main DC Input
The main supply to the TPS65950 for the main rails is the VBAT rail which is a nominal 4.85 V.
7.4 VIO_1V8
The VIO_1V8 rail is generated by the TPS65950 VIO regulator. The voltage is set by configuring the VSEL bit (VIO_VSEL[0]). VIO does not support the SmartReflex voltage control schemes.1 Main Core Voltages
The TPS65950 supplies the three main voltage rails for the processor and the board:
o o o VDD1 (1. A .2V at power up.
7.1uF cap is also provided for high frequency noise filtering. Please refer to the TPS65950 documents for a full explanation of the device operation.1. the output voltage is 1.2V.3V) VIO_1V8 (1. It is one of the first power supplies to be switched on in the power-up sequence. Each rail has a filter cap of 10uF connected to each of the three inputs.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.8 V or 1. I2C_0 is used to control the TPS65950 device. VIO can be put into sleep or off mode by configuring the SLEEP_STATE and OFF_STATE fields of the VIO_REMAP register. The VIO output is a stepdown converter with a choice of two output voltage settings: 1. When the VSEL bit is set to 0.7.7. Figure 26 is the interfacing of the TPS65950 to the system as it provides the three main rails.7. and when it is set to 1.8V)
The VOCORE_1V3 defaults to 1.
7.80 V.0
o Current measurement via SW The other functions are covered in other sections in this document and are grouped by their overall board functions.
7.
Page 57 of 164
. This regulator output is used to supply power to the system memories and I/O ports. the processor must write 1 to the VSEL field to change the output to 1. The explanation of the various regulators found on the TPS65950 is based upon how they are used in the board design and are not intended to reflect the overall capability of the TPS65950 device.7.85 V. When the TPS65950 resets.3V level.85 V.8V.8 V. the default value of this LDO is 1. the output voltage is 1. The default for the BeagleBoard is 1. but can be adjusted by software to the 1. adjustable) VDD2 (1.

To perform VDD1 voltage control through the SmartReflex interface.6 VDD1
The VDD1 rail is supplied by the VDD1 regulator of the TPS65950. the TPS65950 provides the VDD1_SR_CONTROL register. The processor can request the TPS65950 to scale the VDD1 output voltage to reduce power consumption. the sleep mode output voltage of VDD1 equals the floor voltage that corresponds to the VFLOOR field (VDD1_VFLOOR[6:0]). The default voltage scaling method selected at reset is a software-controlled mode. SmartReflex control of the VDD1 and VDD2 regulators can be enabled by setting the SMARTREFLEX_ENABLE bit (DCDC_GLOBAL_CFG[3]) to 1. Apart from these modes. The SmartReflex controller in the processor interfaces with the TPS65950 counterpart through the use of a dedicated I2C bus. The VDD1 regulator is a 1. the VDD1 output voltage can also be controlled by the processor through the SmartReflex I2C interface between the DM3730 and the TPS65950. This regulator is used to power the processor core.
7.
7. The output voltage of the VDD1 regulator can be scaled by software or hardware by setting the ENABLE_VMODE bit (VDD1_VMODE_CFG[0]). VDD1 can be configured to the same output voltage in sleep mode as in active mode by programming the DCDC_SLP bit of the VDD1_VMODE_CFG[2] register to 0.0
7. The MODE field of the VDD1_SR_CONTROL register can be set to 0 to put VDD1 in an ACTIVE state. depending on the value of the STEP_REG field of the VDD1_STEP[4:0] register.5 mV + 600 mV. The VOCORE_1V3 rail should be set to 1.6 V and 1. The VDD1 output voltage is given by VSEL*12.7
VDD2
The VDD2 voltage rail is generated by the TPS65950 using the VDD2 regulator.7.7. Regardless of the mode used. the output voltage ramp can be single-step or multiple-step.1A stepdown power converter with configurable output voltage between 0.3V after boot up. VDD1 output voltage can be programmed by setting the VSEL field of the VDD1_SR_ CONTROL register. which in the case of the BeagleBoard is 1.7.1. The VDD2 regulator is a stepdown converter with a configurable output voltage of between
Page 59 of 164
. When the DCDC_SLP bit is 1.5
Main Core Voltages Smart Reflex
VDD1 and VDD2 regulators on the TPS65950 provide SmartReflex-compliant voltage management.5 mV. setting the field to 1 moves VDD1 to a SLEEP state.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.2V. In each of these modes. The default output voltage at power-up depends on the boot mode settings.45 V in steps of 12. The processor computes the required voltage and informs the TPS65950 using the SmartReflex I2C interface.

2 V. The VPLL2 must be set to 1.45 V. the TPS65950 sets the VDD2 output voltage to 1.6 V to 1. VDD2_FLOOR.
Page 60 of 164
. When VDD2 is controlled by the VMODE2 signal or with the SmartReflex interface.
7. The use of the VMODE2 signal and the VDD2_VMODE_CFG. The VDD2 provides different voltage regulation schemes. If the VSEL field is programmed so that the output voltage computes to more than 1.0 V. and VDD2_ROOF registers is similar to the use of the corresponding signals and registers for VDD1. VDD2 shares the same SmartReflex I2C bus to provide voltage regulation. the VSEL (VDD2_ DEDICATED[4:0]) field can be programmed to provide output voltages of between 0.6 V and 1. or 1.
7. 1. 1. These are: o o o o o o o o o o VDD_PLL2 VDD_PLL1 VDAC_1V8 VDD_SIM VMMC2 VDD_VMMC1 CAM_2V8 CAM_1V8 USB_1V8 EXP_VDD
Figure 27 shows the peripheral voltages supplied by the TPS65950. The VPLL2 LDO can be configured through the I2C interface to provide output voltage levels of 1. The output voltage for a given value of the VSEL field is given by VSEL*12.5 V.8 V. VDD2_STEP.8V for proper operation of the DVI-D interface.3 V.45 V.45 V.5 mV + 600 mV. When the VDD2 is used in software-control mode.0
0.8
Peripheral Voltages
There are 10 additional voltages used by the system that are generated by the TPS65950. based on the value of the VSEL field (VPLLI_DEDICATED[3:0]). VDD2 differs from VDD1 in its current load capabilities with an output current rating of 600 mA in active mode.45 V and is used to power the processor core. The VDD2_SR_CONTROL register is provided for controlling the VDD2 output voltage in SmartReflex mode. On the board this rail is used to power DVI output for pins DSS_DATA(0:5).1. DSS_DATA(10:15) and DSS_DATA(22:23). the range of output voltage is 0.1 VDD_PLL2
This programmable LDO is used to power the processor PLL circuitry.6 V and 1.8.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

4
VDD_SIM
This voltage regulator is a programmable.8. 1. The VAUX2 rail defaults to off as directed by the TPS65950 boot pins and will deliver up to 100mA.5 VMMC2
The VMMC2 rail uses the VMMC2.
7. See the camera module section for more information.8V for proper operation of the camera module.8V. The VMMC1 LDO is powered from the main VBAT rail.0
7. linear voltage regulator supplying the bottom 4 bits of the 8 bit SD/MMC card slot.0V as directed by the TPS65950 boot pins and will deliver up to 220mA.5 to 2.OUT rail from the TPS65950. 2. The VMMC1 rail defaults to 3. The VAUX2 LDO is powered from the main VBAT rail.0V in the event 3V cards are being used. VAUX4 is adjustable from .0 V.8.8 CAM_1V8
This rail powers the optional camera module and uses the VAUX3.6 VDD_VMMC1
The VMMC1 LDO regulator is a programmable linear voltage converter that powers the MMC1 slot and includes a discharge resistor and overcurrent protection (short-circuit). VAUX4 is adjustable from 1. This LDO regulator can also be turned off automatically when the MMC card extraction is detected.2 V.8.7 to 2.
Page 62 of 164
.9
USB_1V8
The VAUX2 LDO regulator is a programmable linear voltage converter that powers the 1. This railed should be set to 1.15V and can deliver up to 100mA of current.
7.85 to 3.8. The VSEL field (VSIM_DEDICATED[3:0]) can be programmed to provide output voltage of 1. or 3. The proper setting of this rail is determined by the application and the HW supplied that connects to P17.8V and can deliver up to 200mA of power. 1.
7. VMMC2 is provided as an auxiliary voltage rail on P17.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.OUT rail from the TP65950.3 V. This railed should be set to 1. The default output voltage of this LDO as directed by the TPS65950 boot pins is 1.8.8. It can be set to 3.1.
7.8V for proper operation of the camera module.8 V.OUT rail from the TPS65950.
7.7 CAM_2V8
This rail powers the optional camera module and uses the VAUX4.8V I/O rail of the USB PHY and includes a discharge resistor and overcurrent protection (short-circuit).0 V and can deliver up to 50mA.8 V.8V and can deliver up to 100mA of power. The voltage rail is labeled VDD_EHCI on the schematic. See the camera module section for more information. the Auxiliary Access Header. low dropout. VMMC2 is adjustable from 1. 1.

EXP_VDD is adjustable from 2. the LCD Expansion Header.1 Boot Configuration
The boot configuration pins on the TPS65950 determine the power sequence of the device.9.0V and can deliver up to 200mA of current. When the battery is not installed.11 for information on the battery selection and installation.10 EXP_VDD
The EXP_VDD rail uses the VAUX1. 7. R65 must be installed.
7.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.
Page 63 of 164
. The battery can be purchased from DigiKey or other component suppliers. In order to support the processor on the board with the correct power configuration. Refer to section 9. The board does not come equipped with the battery.2 RTC Backup Battery
An optional battery to backup for the Real Time Clock that is in the TPS65950 is provided for in the design.5 to 3.1. EXP_VDD is provided as an auxiliary voltage rail on P13. You must make sure that prior to installing the battery that R65 is removed. the boot pin configuration is fixed at: o BOOT0 tied to VBAT o BOOT1 tied to Ground.9. The proper setting of this rail is determined by the application and the HW supplied that connects to P13.9 Other Signals
This section describes other signals in the design that have not been categorized.
7.8.0
7.OUT rail from the TP65950.

Page 64 of 164
. The voltages are ramped in a sequence that is compatible with the processor.9.0
7.1.4 Reset Signals
The BeagleBoard uses three distinct reset circuits: o Warm Reset o Cold Reset o User Reset Figure 28 shows the connections for the Reset interfaces.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. the TPS65950 knows the type of OMAP processor that it needs to support.
Figure 27.9. in this case the processor.3
Power Sequencing
Based on the boot configuration pins. Figure 27 is the sequence in which the power rails. clocks. Power Sequencing 7. and reset signal come up.

1uF 5 1 R42 10K
4
2
U5A 6
3
1
B3F-1000 SN74LVC2G07DCKR 2
Figure 28. By pushing the Reset button. This will allow the nRESPWRON signal to be pulled low. by pressing the reset switch S2. nRESWARM goes low and resets all the peripherals and the TPS65950.2 Cold Reset
On power up as shown in Figure 27. The software that is run as a result of this can then do whatever housekeeping is required and then send the processor into a reset mode. It also allows for the reset signal to be pulled low or held low for an extended time by circuitry on the expansion card if needed. After initialization. power on reset.4.3 User Reset
The USER RESET button can be used to request a Warm Reset from the processor. There is no way for the user to generate a warm reset on the BeagleBoard. The minimum duration of the pulse on the nRESWARM pin should be two 32-kHz clock cycles.7K VIO_1V8 AH25 AF24 SYS_nRESPWRON SYS_nRESWARM/GPIO_30 2 4 6 8 10 12 14 16 18 20 22 24 26 28
P9 1 3 5 7 9 11 13 15 17 19 21 23 25 27
VBAT
IO_1P8 VBAT
nRESPWRON nRESWARM PWRON
A13 B13 A11
nRESPWRON nRESWARM PWRON 4. The nRESWARM output is open-drain. When an internal reset occurs.7K VIO_1V8
VIO_1V8 R59
PROCESSOR
nRESET S2
C12 R53 DNI 0.
7.9.9. the signal becomes open drain. which requires a pullup on the signal. The TPS65950 can be configured to perform a warm reset of the device to bring it into a known defined state by detecting a request for a warm reset on the NRESWARM pin.4.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.1. an external pullup resistor is required.
7. SN74LVC2G07. this pin becomes an input to the processor. The signal from the TPS65950 is an output only and is not an open drain signal.1 Warm Reset
The warm reset is generated by the processor on power up.9. Reset Circuitry 7. By running the signal through a buffer. The nRESWARM signal is a bidirectional reset. an interrupt is generated into the processor.4.0
U7A
T P S 6 5 9 5 0
DM3730
U4B
R61 4. to force a reset to the PROCESSOR processor and to any device on the expansion card that require a reset. consequently. the TPS65950 generates nRESPWRON.
Page 65 of 164
.

1.9.5 mSecure Signal
This signal provides for protection of the RTC registers in the TPS65950 be disabling that function via a control signal from the processor.4. This signal is referenced in the TPS65950 documentation. DM37x Block Diagram
Page 66 of 164
. please refer to the processor Technical Reference Manual.4
PWRON
You will notice another signal on the TPS65950 called PWRON.
Figure 29. For more information on the operation on the signal.0
7. In the BeagleBoard design it is not used but it is pulled high to insure the desired operation is maintained. Figure 29 is a high level block diagram of the processor.10
Processor
The heart of BeagleBoard-xM is the DM3730 processor.9.
7.
7.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

In the Rev
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. The processor architecture is configured with different sets of features in different tier devices. such as: o Windows CE o Linux o QNX o Symbian o Others This processor device includes state-of-the-art power-management techniques required for high-performance low power products. refer to the Technical Reference Manual (TRM). Its connectivity is limited to the POP memory access on the top of the processor and therefore is only accessible by the SDRAM memory. multimedia application device and is integrated onto TI's advanced 45-nm process technology.1 Overview
The DM3730 is a high-performance. Some features are not available in the lower-tier devices. you will notice on page 3 there are a lot of signals labeled NA0…65.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. If you look at the –xM schematic.The architecture is designed to provide best-in-class video.2 SDRAM Bus
The SDRAM bus is not accessible on the BeagleBoard. The processor supports high-level operating systems (OSs). The DM3730 supports the following functions and interfaces on the BeagleBoard: o Microprocessor unit (MPU) subsystem based on the ARM Cortex-A8™ microprocessor o POP Memory interface o 4Gb MDDR (512Mbytes) o 24 Bit RGB Display interface (DSS) o SD/MMC interface o USB OTG interface o NTSC/PAL/S-Video output o Power management o Serial interface o I2C interface o I2S Audio interface (McBSP2) o Expansion McBSP1 o JTAG debugging interface
7. and graphics processing sufficient to various applications.10. The base address for the DDR SDRAM in the POP device is 0x8000 0000.1.0
7. For more information. These pins are located on the bottom of the processor. image.10.

10. but can be used in lower bit modes if needed. The memory on the GPMC bus is NAND and therefore will support the classical NAND interface.
Processor
Figure 30. The logic levels of the LCD expansion connectors are 1.
7.10.6 McBSP1
Page 68 of 164
. However. Figure 30 is a depiction of McBSP2.8V so it will require buffering of the signals to drive most LCD panels. these pins provided access to the SDRAM bus. The DSS is configured to a maximum of 24 bits.3 GPMC Bus
The GPMC bus is not accessible on the BeagleBoard.4 DSS Bus
The display subsystem provides the logic to display a video frame from the memory frame buffer in SDRAM onto a liquid-crystal display (LCD) display via the DVI-D interface or to a standalone LCD panel via the LCD interface connectors.0
BeagleBoard processor. these there are no signals on these pins.10. Its connectivity is limited to the POP memory access on the top of the processor and therefore is only accessible by the NAND memory.
7.10.5 McBSP2
The multi-channel buffered serial port (McBSP) McBSP2 provides a full-duplex direct serial interface between the processor and the audio CODEC in the TPS65950 using the I2S format. in the case of the processor on the BeagleBoard–xM. The address of the memory space is programmable.
7. McBSP2 Interface 7. Only four signals are supported on the McBSP2 port.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.1.

0
On the processor. In the case of the signals going to the expansion connector. A FIXED indicates that there is only one function for that signal and that it cannot be changed. the pins used must be set to the correct signal. Table 4 is a list of all of the signals used on the processor for the BeagleBoard and the required mode setting for each pin. In essence. it will be indicated. Each pin can be set to a different mode independent of the other pins on the connector. please refer to the Expansion Header section. For an explanation of the options. In order for the BeagleBoard to operate. the default signal is the correct signal. the pin can become different signals depending on how they are set in the software. Where the default setting is needed. This is called the pin mode and is indicated by a three bit value (0:3). In some cases. The USER notation under mode indicates that this is an expansion signal and can be set at the discretion of the user. Each pin can have a maximum of 8 options on the pin.1. the majority of pins have multiple configurations that the pin can be set to.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. the settings required for those pins depends on how they are to be used.
Processor Pin Muxing Settings
Signal
DSS MMC1 MMC2 UART3 GPMC UART1 I2C1 I2C2 I2C3 I2C4 JTAG TV_OUT SYS_nRESPWRON SYS_nRESWARM SYS_nIRQ SYS_OFF SYS_CLKOUT SYS_CLKOUT2 SYS_CLKREQ SYS_XTALIN GPIO_149 GPIO_150 McBSP1 McBSP2 McBSP3 GPIO_171 GPIO_172
Mode
Default Default User Default Default Default Default Default Default Default FIXED Default Default Default Default Default Default Default Default FIXED 4 4 Default User Default 4 4
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.
Table 4.

0
7. Goes to the processor over the SYS_nIRQ pin.
Table 5.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. For information on those. MMC1 card detect input.10 Interrupt Mapping
There are a small number of pins on the processor that act as interrupts. Used to put the device in the boot mode or as a user button input
Other signals.
P12
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.9 GPIO Mapping
There are a number of GPIO pins from the processor that are used on the BeagleBoard design.10. A Hi = DVI-D enabled. refer to the Expansion Connector section. the table only covers the GPIO pin mode.
OMAP PIN AA9 W8 AG9 J25 AE21 INT/GPIO GPIO_149 GPIO_150 GPIO_23 GPIO_170 GPIO_7 I/O O O I O I Signal LED_GPIO149 LED_GPIO149 MMC1_WP DVI_PUP SYSBOOT_5
Processor GPIO Pins
USAGE Controls User LED0 Controls User LED1 SD/MMC card slot Write protect Controls the DVI-D interface. Some of these interrupts are connected to the TPS65950 and their status is reflected through the main TPS65950 interrupt.10. If it is an interrupt. While GPIO pins can be used as interrupts.
7.
Table 6. such as those that connect to the expansion connector.1. Table 5 shows which of these GPIO pins are used in the design and whether they are inputs or outputs.
TPS65950 Pin Processor PIN AF26 AH8 INT/GPIO SYS_nIRQ GPIO_29 GPIO0
Processor Interrupt Pins
USAGE Interrupt from the TPS65950 SD Write protect lead. may also be set as a GPIO pin. Table 6 lists the interrupts. then it is covered in the interrupt section. Can be polled or set to an interrupt.

7. The RTC is not enabled by default. the host processor must set the correct date and time to enable the RTC. a 33 ohm resistor is providing to minimize any reflections on the clock line. this is done by the internal boot ROM on startup.0
7.768-kHz clock drives the RTC embedded in the TPS65950. and in that condition. but it can be disabled if desired under SW control. HFCLK_FREQ must be set by the processor during the initial power-up sequence. The 32.5-M byte. and the PWR registers are accessed at a default 1. The TPS65950 must have this clock in order to function to the point where it can power up the BeagleBoard. The three DCDC switching supplies (VIO.12. This is the reason the 26MHz clock is routed through the TPS65950.12. System Clocks
Revision C. the Processor must immediately indicate the HFCLKIN frequency (26 MHz) by setting the HFCLK_FREQ bit field (bits [1:0]) in the CFG_BOOT register of the TPS65950.2
TPS65950 Setup
When the TPS65950 enters an active state. Y2.2.12.1.
7.
7. The TPS65950 has a separate output from the crystal to drive the processor that buffers the resulting 32-kHz signal and provides it as 32KCLKOUT.1 32KHz Clock
The 32KHz clock is needed for the TPS65950 and the processor and is provided by the TPS65950 via the external 32KHz crystal.2. HFCLK_FREQ has a default of being not programmed.
Page 73 of 164
.
7. The clock signal enters via ball AE17 on the PROCESSOR. The default mode of the 32KCLKOUT signal is active.12.3
Processor 26MHz
The 26MHz clock for the processor is provided by the TPS65950 on ball R12 through R38.1 26MHz Source
The BeagleBoard is designed to support two suppliers of the 26MHz oscillator. and VDD2) operate from their free-running 3-MHz (RC) oscillators. VDD1. Y1.2 26MHz Clock
This section describes the 26MHz clock section of the BeagleBoard. The 26MHz clock is provided by an onboard oscillator.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Figure 34.12. On the BeagleBoard. the USB subsection does not work. The TPS65950 receives the external HFCLKIN signal on ball A14 and uses it to synchronize or generate the clocks required to operate the TPS65950 subsystems. which is provided to the processor on ball AE25.2.

Page 74 of 164
. is intended to be a client mode in order to pull power from the USB host which is typically a PC. The USB peripherals cannot initiate data transfers.
7. 7. the need to use three OTG port as a Host. The standard USB uses a master/slave architecture. control the connection and exchange Host/Peripheral roles between each other.0
7.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. An example might be connecting a USB keyboard or printer to BeagleBoard or a USB printer that knows how to grab documents from certain peripherals and print them. Client port. Only the USB host can schedule the configuration and data transfers over the link. As the Rev B does not have a Host USB port. a USB host acting as a master and a USB peripheral acting as a slave.
NOTE: In order to use the OTG in the Host mode.13. The combination of the processor and the TPS65950 allows the BeagleBoard to work as an OTG device if desired.1 USB OTG Overview
USB OTG is a supplement to the USB 2. the supplement notes that using it will lead to losing USB OTG role-swap capabilities making one device as the Default-Host and the other as the Default-Peripheral until the hub is disconnected. the BeagleBoard must be powered from the DC supply. This clock is provided to the PROCESSOR in order to insure synchronization of the I2S interface between the processor and the TPS65950. is not really needed. The main use is as a client port. With the addition of the USB Host ports. but it describes role swapping only in the case of a one-to-one connection where two OTG devices are directly connected. this port will be used as a Host port in many applications. The USB OTG supplement does not prevent the use of a hub. they only respond to instructions given by a host. as that is the mode that will supply the power needed to power the BeagleBoard. The primary mode of operation however.1.3 McBSP_CLKS
An additional clock is also provided by the TPS65950 called McBSP_CLKS. USB OTG works differently in that gadgets don't need to be pure peripherals because they can sometimes act as hosts.13 USB OTG Port
The BeagleBoard has a USB OTG (On-the-Go) port. or Host port.12.0 specification. If a standard hub is used. The USB OTG compatible devices are able to initiate the session. It can be used as an OTG port.

The charge pump is powered by the VBAT voltage rail. The charge pump generates a 4.8-V (nominal) power supply voltage to the VBUS pin. The input voltage range is 2.7 V to 4.5 V so the 4.2V VBAT is within this range. The charge pump operating frequency is 1 MHz. The charge pump integrates a short-circuit current limitation at 450 mA.

7.13.5 OTG USB Connector

The OTG USB interface is accessed through the miniAB USB connector. If you want to use the OTG port as a USB Host, pin 4 of the connector must be grounded. The -xM Rev A version of Beagle provides jumper pad, J6 that allows for a small piece of solder to be placed on the pads to perform this function. It should be noted that with the USB Host port on the -xM Rev A Beagle, the need to convert the OTG port to a host mode is greatly diminished.

7.13.6 OTG USB Protection

Each lead on the USB port has ESD protection. In order for the interface to meet the USB 2.0 Specification Eye Diagram, these protection devices must be low capacitance.

7.14

Onboard USB HUB

A new feature of the –xM board is the inclusion of an onboard USB 4 port hub with an integrated 10/100 Ethernet. This section describes the design of the HUB and the interface to the processor. This allows for the support of LS and FS USB devices without the need for an external USB HUB. Figure 36 is a high level block diagram of the system design of the integrated HUB.

Page 77 of 164

REF: BB_SRM_xM

BeagleBoard-xM System Reference Manual

Revision C.1.0

Figure 36. USB HUB Block Diagram

The following section covers each of the key function in the overall design. o o o o o Power HS USB PHY HUB USB Port Power Ethernet

7.14.1 Power

The power for the HUB is provided by two sources. Figure 37 is the design of the HUB power circuitry. The HUB_3V3 rail, the main supply rail for the HUB, is provided by U16, a TL1963A LDO. Power for the LDO is provided by the DC_5V_USB rail from the overvoltage protection circuit. The LDO is set to provide 3.3V and is set by R111 and R113. This rail can be turned on or off from the processor by using the I2C bus to communicate to the TPS65950. By default, the LDO is turned off. The TPS65950 provides the USB_1V8 rail which is used by the USB PHY. The processor can turn on or off this rail by communicating with the TPS65950 via the I2C bus.

A green LED, D14, indicates that power is applied to the HUB circuitry.

7.14.2 HS USB PHY

The configuration of the HS USB PHY is basically the same as on the Rev BeagleBoard design. A PHY is required between the processor ULPI interface and the USB HUB. Figure 39 shows the processor and PHY interface.

The USB3320 is a highly integrated Hi-Speed USB2. All of the signals and their functions align with the descriptions found in the processor interface section. 15kΩ pull-down resistors and the 45Ω high speed termination resistors.5kΩ pull-up resistors. The PHY used in the design is a USB3320 series device from SMSC.
Page 81 of 164
. It was proven not to be the case. In order to interface to the processor.
7. The USB3322 device requires two voltages. This includes 1. Figure 40 is the HUB design.0
The husb2_clk signal is an output only and is used to support a HS USB PHY that supports an input clock mode.3V rail for the device is generated internally and requires a filter and bypass cap to be connected externally. These resistors require no tuning or trimming.8V and therefore the resistor will dissipate approximately 80μW of power. only the host mode of operation is being supported as it is used to connect to the HUB on the board. we ground the ID pin to force it into a Host mode at all times. The nominal voltage at RBIAS is 0.14. the USB_1V8 rail to power the I/O rails and the HUB_3V3 to power the rest of the device.1. The 3. The clock for the PHY is derived from the 60MHz signal generated by the processor. In this design. The SMSC PHY device supports this mode and is used on the Beagle. The RBIAS block in the PHY consists of an internal bandgap reference circuit used for generating the driver current and the biasing of the analog circuits.06KΩ. The USB3322 transceiver fully integrates all of the USB termination resistors on both DP and DM. 1% tolerance. This block requires an external 8. a zero ohm series resistor was added.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. the device must be used in the 60MHz clock mode. This is not required. but was added as a “just in case” option if the CLKOUT signal was a source of noise in the PHY.3 USB HUB
The key component in the HUB design is a SMSC LAN9514 USB HUB plus Ethernet device. On -XM Rev A. reference resistor connected from RBIAS to ground. As we are not using this device to support the OTG protocol but instead as a host device. This is done by tying the CLKOUT signal on the USB PHY to VIO_1V8. The USB_1V8 rail is derived from the VAUX2 rail supplied by the TPS65950 PMIC.0 Transceiver (PHY) that meets all of the electrical requirements to be used as a Hi-Speed USB Host.

4 Booting From SD/MMC Cards
The ROM code supports booting from the microSD cards with some limitations: o Support for SD cards compliant with the Multimedia Card System Specification v4.R27. The ROM code only supports standard operating voltage range (3-V). o 3-V power supply. Including high-capacity (size >2GB) cards: HC-SD and HC MMC. A limited range of commands is implemented in the ROM code.0 from the SD Association. 3-V I/O voltage on port 1 o Initial 1-bit MMC mode. o Clock frequency: – Identification mode: 400 kHz – Data transfer mode: 20 MHz o Only one card connected to the bus o FAT12/16/32 support.15. The high-speed microSD host controllers handle the physical layer while the ROM code handles the simplified logical protocol layer (read-only protocol).
Page 86 of 164
. 4-bit SD mode. An interrupt.15. The MMC/SD specification defines two operating voltages for standard or high-speed cards. if enabled. This is detected on pin P12 of the TPS65950. is sent to the processor via the interrupt pin.3 Card Detect
When a card is inserted into the connector.2 from the MMCA Technical Committee and the Secure Digital I/O Card Specification v2.1. the Card Detect pin is grounded. The ROM code reads out a booting file from the card file system and boots from it.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. The SW can be written such that the system comes out of sleep or a reduced frequency mode when the card is detected. with or without master boot sector (MBR).0
P26.
7.R25
7.

5mm jack is supplied to support external audio inputs including stereo or mono. If this feature is to be used.DIN I2S.4 Audio Input Jack
A single 3. The TPS65950 supports the I2S left-justified and right-justified data formats. In Table 13 are all the signals used to interface to the processor.16. it may require additional amplification of the signal for proper use.
7.3 Audio Output Jack
A single 3. If the TPS65950 is the master.16. This interface is not amplified and may require the use of amplified speakers in certain instances.CLK I2S. but doesn’t support the TDM slave mode. the TPS65950 receives frame synchronization and bit clock.
Table 13.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.2 TPS65950 Audio Interface
The TPS65950 acts as a master or a slave for the I2S interface.16.
7. DOUT CLK256FS
Description
Clock signal (audio port) Synchronization signal (audio port) Data receive (audio port) Data transmit (audio port) Synchronization frame sync to the PROCESSOR
I/O
I/O IO I O O
Pin
L3 K6 K4 K3 D13
A new feature on the –xM is the ability to access the audio signals for use on an external add on board. Processor Audio Signals
Signal Name
I2S.0
7. you must disable via SW this interface on the TPS65950.
Page 88 of 164
. If it is the slave.1.SYNC I2S. If a microphone is o be used.5mm jack is provided on BeagleBoard to support external stereo audio output devices such as headphones and powered speakers. it must provide the frame synchronization (I2S_SYNC) and bit clock (I2S_CLK) to the processor.

0
resistor packs on the BeagleBoard.3 TFP410 Power
Power to the TFP410 is supplied from the 3.
7.
Table 15. The adjustable 1. the TPS2141. TFP410 Interface Signals
Signal Name
DATA[23:12] DATA[11:0] IDCK+ IDCKDE HSYNC VSYNC DK3 DK2 DK1
Description
The upper 12 bits of the 24-bit pixel bus. The maximum clock frequency of these signals is 65MHz.17. Single ended clock input.
7. the transmitter encodes pixel data.1.5653 57 56 2 4 5 6 7 8
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.1-V to 1. L4.8V. Horizontal sync input Vertical sync input These three inputs are the de-skew inputs DK[3:1]. high-speed bus that connects seamlessly with the 1.17.
7.4 TFP410 Framer
The TFP410 provides a universal interface to allow a glue-less connection to provide the DVI-D digital interface to drive external LCD panels. the transmitter encodes HSYNC and VSYNC. DATA[23:0]. This will be fixed on the next letter revision of the board. During active video (DE = high). and L6 that are used to filter the 3. Table 15 is a description of all of the interface and control pins on the TFP410 and how they are used on BeagleBoard. used to adjust the setup and hold times of the pixel data inputs DATA[23:0]. VDD_PLL2 is not turned and must be activated by SW.8V and 24-bit interface output by the processor.8-V digital interface provides a low-EMI. the ability to shut off the DVI-D display is not supported. Data enable. The bottom 12 bits of the 24-bit pixel bus. relative to the clock input IDCK±. By default.17. The DVI interface on the BeagleBoard supports flat panel display resolutions up to XGA at 65 MHz in 24-bit true color pixel format.3V rail into the TFP410. Tied to ground to support the single ended mode. Both of these rails are controlled by the TPS65950 and must be set to 1. Otherwise some of the bits will not have power supplied to them. It should be noted that on the Rev A2 version.3V regulator in U1. During the blanking interval (DE = low). there are three inductors. two voltage rails must be active. L5. In order to insure a noise free signal.2 LCD Power
In order for the DSS outputs to operate correctly out of the processor. VIO_1V8 and VDD_PLL2. A low level indicates a powered on receiver is detected at the
Type
I I I I I I I I I I
Ball
36–47 50–55.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

2 BSEL
The BSEL pin is pulled HI to select the 24 bit mode for the Pixel Data interface from the processor.
7.5. DKEN). This allows the other modes for the TFP410 to be set by the other control pins.5.17. A high level indicates a powered on receiver is not detected.17. Lo to select the single ended clock mode. are pulled low by the internal pulldown resistors in the TFP410.17. A HI selects normal operation and a LO selects the powerdown mode. A high level selects the primary latch to occur on the rising edge of the input clock IDCK A HI level enables the de-skew controlled by DK[1:3] Sets the level of the input signals from the PROCESSOR.5 DKEN
The DKEN signal is pulled HI to enable the de-skew pins.1 ISEL
The ISEL pin is pulled LO via R99 to place the TFP410 in the control pin mode with the I2C feature disabled. Configuration is specified by the configuration pins (BSEL.5.0
MSEN
ISEL BSEL DSEL EDGE DKEN VREF PD
TGADJ
differential outputs. DK1-DK3.4 EDGE
The EDGE signal is pulled HI through R82 to select the rising edge on the IDCK+ lead which is the pixel clock from the PROCESSOR. This pin controls the amplitude of the DVI output voltage swing. Selects the 24bit and single-edge clock mode. EDGE. The de-skew pins. Most of these pins are set by HW and do not require any intervention by the processor to set them.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. determined by the value of the pullup resistor RTFADJ connected to 3. This is the default mode Page 92 of 164
.17.5. DSEL.
7.
7.17. VREF) and state pins (PD.1.
7.5 TFP410 Control Pins
There are twelve control pins that set up the TFP410 to operate with the processor.17.3V.5.
7.
O
11
I I I I I I I
13 13 14 9 35 3 10
I
19
7. This pin disables the I2C mode on chip.3 DSEL
The DSEL pin is pulled low to select the single ended clock mode from the PROCESSOR.

when low. it is not expected that any of the resistors will need to be installed.3V. the output of U4 will also go LO. DE. putting the TFP410 in the power down mode. meaning it is not being driven. This signal is not connected to the processor and is provided as a test point only.0
of operation.
7.7
VREF
The VREF signal sets the voltage level of the DATA.
7.
7.5.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.5. If the GPIO_170 pin is HI.17. On power up.5. then the open drain signal is inactive.5. When the processor powers on. a 10K resistor. causing the signal to be pulled HI by R98. VSYNC.3V.8V to match the processor.17.8V. the level is set to .5.5. If desired.6 MSEN
The MSEN signal.1. and IDCK+ leads from the processor. As the processor is 1. determined by the value of R95.9V by R64 and R65.17.17.
7. SN74LVC2G07. HSYNC. When GPIO_170 is taken low. Even though U4 is running at 1. placing the TFP410 in the power down mode. However. pin J25 comes in the safe mode.17. The DK1-DK3 pins adjust the timing of the clock as it relates to the data signals. R109 insures that the signal is pulled LO.17. a non-inverting open drain buffer. the TFP410 is disabled by R109.3V referenced.
7. This is done by U4.10 RSVD2
This unused pin is terminated to ground as directed by the TFP410 data manual.
7.8 PD
The PD signal originates from the processor on the GPIO_170 pin.17.
7. Because the PD signal on the TFP410 is 3.11 NC
This unused pin is pulled HI as directed by the TFP410 data manual. the output will support being pulled up to 3. this signal must be converted to 3.6 DVI-D Connector
Page 93 of 164
.9 TFADJ
The TFADJ signal controls the amplitude of the DVI output voltage swing. the resistors can be installed to pull the signals high. indicates that there is a powered monitor plugged into the DVI-D connector.

6.1. The monitor contains EEPROM programmed by the manufacturer with information about the graphics modes that the monitor can display.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.2 DAT0+/DAT0-
The differential signal pair DAT0+/DAT0.17. called DDC2B.
7.6. a TXS0102.transmits the 8-bit blue pixel data during active video and HSYNC and VSYNC during the blanking interval.transmits the 8-bit green pixel data during active video.
7. This signal is tied directly to ground. The BeagleBoard does not support HDMI but only the DVI-D component of HDMI.6.
7.
7.17. is based on the I²C bus.6. removing the need for an external resistor.17. the I2C bus is level translated by U11. The current version of DDC.5 TXC+/TXC-
The differential signal pair TXC+/TXC.transmits the differential clock from the TFP410. a resetable fuse.6.
7.6.transmits the 8-bit red pixel data during active. As the processor is 1.8V I/O.0
In order to minimize board size.17.1 Shield Wire
Each signal has a shield wire that is used in the cable to provide signal protection for each differential pair.17.6.
7. Inside of TXS0102 is a pullup on each signal.4 DAT2+/DAT2-
The differential signal pair DAT2+/DAT2.17. a HDMI connector was selected for the DVI-D connection. The Cable is not supplied with the BeagleBoard but is available from numerous cable suppliers and is required to connect a display to the BeagleBoard. The standard was created by the Video Electronics Standards Association (VESA). It provides for a split rail to allow the signals to interface on both sides of the circuit.7 HDMI Support
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.3 DAT1+/DAT1-
The differential signal pair DAT1+/DAT1. This interface in the LCD panel is powered by the +5V pin on the connector through RT1.17.
7.6 DDC Channel
The Display Data Channel or DDC (sometimes referred to as EDID Enhanced Display ID) is a digital connection between a computer display and the processor that allows the display specifications to be read by the processor.

A standard HDMI cable may be used to connect to the HDMI input of monitors or televisions.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. Buying a DVI to VGA adapter connector will not work on a VGA display. which provides RGB analog signals. DVI is enabled.17.6. This is due to the routing on the PCB where we allowed the routing to take precedence to get it to route with no addition of layers to the design. The audio and encryption features of HDMI are not supported by the BeagleBoard. Whether or not the Beagle will support those monitors is dependent on the timings that are used on the BeagleBoard and those that are accepted by the monitor.
7.8
DVI to VGA
The analog portion of DVI. When Hi. Can be used to activate circuitry on adapter board if desired. You will need an active DVI-D to VGA adapter.1. Ground bus Ground bus
Page 95 of 164
. You will notice that the signals are not in a logical order or grouping.18
LCD Expansion Headers
Access is provided on the -XM Rev A to allow access to the LCD signals. P11 LCD Signals
Pin#
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Signal
DC_5V DC_5V DVI_DATA1 DVI_DATA0 DVI_DATA3 DVI_DATA2 DVI_DATA5 DVI_DATA4 DVI_DATA12 DVI_DATA10 DVI_DATA23 DVI_DATA14 DVI_DATA19 DVI_DATA22 I2C3_SDA DVI_DATA11 DVI_VSYNC DVI_PUP GND GND
I/O
PWR PWR O O O O O O O O O O O O I/O O O O PWR PWR
Description
DC rail from the Main DC supply DC rail from the Main DC supply LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit I2C3 Data Line LCD Pixel Data bit LCD Vertical Sync Signal Control signal for the DVI controller.0
The digital portion of the DVI-D interface is compatible with HDMI and is electrically the same. Table 16 shows the signals that are on the P11 connector.
Table 16. Another option for these signals is to buy a board that connects to the J4 and J5 expansion connectors and generates the RGB signals for the VGA display.
7. is not supported by the BeagleBoard. This may require a change in the software running on the Beagle.

Keep in mind that some of that power is needed by the USB Host power rail and if more power is needed for the expansion board.8V buffer reference rail.0
The current available on the DC_5V rail is limited to the available current that remains from the DC supply that is connected to the DC power jack on the board. Figure 45 is the design of the SVideo interface. LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit LCD Pixel Data bit No connect LCD Pixel Data bit I2C3 Clock Line LCD Pixel Data bit DVI Clock Data Enable Horizontal Sync Ground bus Ground bus
I/O O O O O PWR PWR
The 1. but the power should be taken into consideration when making this decision.
Page 96 of 164
.1.8V rail is for level translation only and should not be used to power circuitry on the board.
Table 17.3V reference rail 1. Table 17 shows the signals that are on connector P13. If the TFP410 is disabled on the Beagle. the main DC power supply current capability may need to be increased. It is not required that the TFP410 be disabled when running an adapter card.
7.8V except the DVI_PUP which is a 3.19
S-Video
A single S-Video port is provided on the BeagleBoard.3V signal. The 3.3V VIO_1V8 DVI_DATA20 DVI_DATA21 DVI_DATA17 DVI_DATA18 DVI_DATA15 DVI_DATA16 DVI_DATA7 DVI_DATA13 DVI_DATA8 NC DVI_DATA9 I2C3_SCL DVI_DATA6 DVI_CLK+ DVI_DEN DVI_HSYNC GND GND
Description
3. All signals are 1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. It is suggested that the 5V rail be used to generate the required voltages for an adapter card. then 80mA is freed up for use on an adapter card connected to the LCD signals connectors.3V rail also has limited capacity on the power as well. P13 LCD Signals I/O
PWR PWR O O O O O O O O O
Pin#
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Signal
3.

If this rail is set to a voltage higher than 1.
7.2 Camera I2C Port
The processor uses the I2C2 port to communicate to the camera module to set the registers in the device. The I/O status of each pin is defined from the perspective of the processor. Camera Interface Signals
Signal
cam_hs cam_vs cam_xclka cam_d0 cam_d1 cam_d2 cam_d3 cam_d4
Function
HS VS Clock Camera Data Camera Data Camera Data Camera Data Camera Data
Description
Camera Horizontal Synchronization Camera Vertical Synchronization Camera Clock Output Camera image data bit 0 Camera image data bit 1 Camera image data bit 2 Camera image data bit 3 Camera image data bit 4
I/O
I/O I/O O I I I I I
Processor
A24 C25 AG17 AH17 B24 C24 D24
Page 99 of 164
.8V rail that is supplied by the TPS65950.
7.20.3 Processor Camera Port Interface
Table 19 shows the signals that are the interface between the processor and the camera modules.
7.
7. If an add-on board is not used. it will damage the processor if the camera module is inserted. The cam_wen signal is labeled as CMOS_OE on the schematic.1. This makes the 3. This is used for the internal logic in the camera module. This will set the level of all of the interface signals to the processor. The power is controlled via the I2C1 interface from the processor by setting the VAUX4 regulator to 1. There are no pullups on the board for the I2C to prevent conflict with add on boards that do have the pullups.8V rail that is supplied by the TPS65950.
Table 19.20. The power is controlled via the I2C1 interface from the processor by setting the VAUX3 regulator to 1.3V rail more suitable as it allows you to totally remove the power form the camera module.8V.1. It is provided for future use.8V.0
The 5V is on whenever a power source is applied to the board and cannot be controlled.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.2 CAM_DIGITAL Power
The digital power is a 1. the SW will need to enable the internal pullups on the I2C2 signals in order for the interface to work. All of the current camera modules do not use this signal and this signal has no affect on the operation of the camera modules.3 CAM_IO Power
The I/O power is a 1.20.8V.20.1.

3V rail and is active at power up.1. 1. This allows the port to be used for UART based peripheral booting over the port.4 Connector
Access to the RS232 port is through a 9 pin DB9 connector. the OE is tied high via a 10K ohm resistor to insure that it is always on. In this design.
7.
7. The transceiver is powered from the 3. The A port tracks VCCA. A standard male to female straight DB9 cable can be used or a USB to DB9 adapter can be plugged direct into the board.0
All of the I/O levels from the processor are 1. including GND).3V. distance.
7. The SN65C3221 operates at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/ms to 150 V/ms. When the output-enable (OE) input is low.8V and the B port tracks VCCB. 3.22
Indicators
There are five green indicators on the BeagleBoard: o o o o o Power PMU_STAT USER0 USER1 HUB Power
All of the green LEDs are programmable under software control. one line receiver.21.3 RS232 Transceiver
The RS232 transceiver used is the SN65C322 which consists of one line driver. Figure 49 shows the connection of all of these indicators.8V while the transceiver used runs at 3. The charge pump and four small external capacitors allow operation from a single 3-V to 5. and the loads and drive capability on the other end of the RS232 port.5-V supply. This is new on the –xM version and replaces the 10 pin header. and a dual charge-pump circuit with ±15-kV IEC ESD protection pin to pin (serial-port connection pins. your results may vary based on cabling. all outputs are placed in the high-impedance state.3V.21.
Page 103 of 164
. This allows for low-voltage bidirectional translation between the two voltage nodes. P9. While the processor can easily drive a 1Mbit/S rate. This requires that the voltage levels be translated. This is accomplished by the TXS0102 which is a two-bit noninverting translator that uses two separate configurable powersupply rails.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. These devices provide the electrical interface between an asynchronous communication controller and the serial-port connector.

Turning on this LED is not something that a person should try to do as it indicates that the user is not paying attention and has plugged in a potentially damaging power supply into the power jack.1% 4.22. is used to drive the LED that is connected to the VBAT rail through a resistor. Each LED circuit is independently controllable for basic power (on/off) control and illumination level (using PWM).M LEDA/VIBRA.B. Indicator D5 does not indicate which power source is being used to supply the main power to the board but only that it is active. Page 104 of 164
1
7 15
10k 47k
SN74LVC2G06DCKR
POWER
R12 13 12 14 1 330
USER1
10k 47k
Q1B
SW_EN
SW_PG
TPS2141PWP
GRN
10k 47k
.7uF.1 Power Indicator
This indicator. LED.0
There is also a single RED LED on the board.0603 D14
SHDN GND GND ADJ
TL1963A
USB ACTIVE
LTST-C190GKT
GRN
VBAT LTST-C190GKT
GRN R64 D12 330 G15 F15 F16 N12
U7A
TPS65950 R136 330 R8 VBAT
LEDB/VIBRA. The first circuit can provide up to 160 mA and the second.4K.6. By default this is always disabled on power up.3V. connects from the 3. D5.
DC_5V_USB 2 1 3
U16 IN OUT 4
HUB_3V3 C177 6 5 U16_FB R111 56. The second driver. The TPS65950 provides LED driver circuitry to power two LED circuits that can provide user indicators.2 PMU Status Indicator
This output is driven from the TPS65950 using the LED. It indicates that the entire power path is supplying the power to the board.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.B output.3V rail supply and ground.22. Indicator Design 7.1.P LEDGND GPIO. 50 mA.1
LTST-C190GKT GRN
VIO_1V8 4
U2 LDO_IN LDO_PLDN LDO_OUT 6 LDO_EN ADJ LDO_PG 3 2 SW_IN SW_IN SW_OUT SW_OUT SW_PLDN 10 11
AUX_3V3 D5 LTST-C190GKT
5
6
R39 Q1A RN1907
330
D6
VBAT 1 U18A GRN 6
10K
GRN
U4B Processor GPIO_149 GPIO_150 AA9 W8 2
USER0
R40 VBAT 330 D7 LTST-C190GKT
9 8
2
1
3
5
RN1907
DC_IN
5 D13 LTST-C150CKT
GND PPAD
VOLTERR_R
4
DC_IN R121 U19 4 5 2 VDD SENSE RSET GND NC 3 1 VOLTDET 2 R130 10K 510
VOLT_ERR
6
Q2A RN1907
TPS3803G15
Figure 49.1% R113 32. Software does have the ability to turn off this regulator and thereby turning off the LED.
7.2K.

7.4 HUB Power Indicator
The HUB power LED. The output level of the processor is 1. These can be used for any purpose by the software. A logic level of 1 will turn the LED on.0
The PWM inside the TPS65950 can be used to alter the brightness of the LED if desired or it can be turned on or off by the processor using the I2C bus.
Page 105 of 164
. that can be driven directly from a GPIO pin on the processor. duty cycle based on a nominal 4-Hz cycle which is derived from an internal 32-kHz clock.1.23
JTAG
A JTAG header is provided to allow for advanced debugging on the BeagleBoard by using a JTAG based debugger.
7.A output. RN1907 is used to drive the LEDs from the VBAT rail. This output is driven from the TPS65950 using the LED.3V. is turned on whenever the USB HUB power is active. The processor can control the LED by communicating via the I2C to the TPS65950. A transistor pair.22. The PWM is programmable. D6 and D7. TPS3803.5 Overvoltage Indicators
The Over Voltage LED.8V and the current sink capability is not enough to drive an LED with any level of brightness.22. It is possible to set the LED to flash automatically without software control if desired.22.
7.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. turns on whenever the DC voltage exceeds 5. The detection circuit. Figure 50 shows the interconnection to the processor. turns on the LED.
7.3 User Indicators
There are two user LEDs. register-controlled. D14. D13.

Table 22 shows all of the signals that are on the expansion header.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. *= this indicates that there is a signal connected when this mode is selected.
7. Main Expansion Header Processor Connections
CAUTION: The voltage levels on the expansion header are 1.
DC_5V Processor U3B McBSP3_DX McBSP3_CLKX McBSP3_FSX McBSP3_DR McBSP1_DX McBSP1_CLKX McBSP1_FSX McBSP1_DR McBSP1_CLKR McBSP1_FSR I2C2_SCL I2C2_SDA AB26 AA25 AE5 AE6 V21 W21 K26 U21 Y21 AA21 AF15 AE15 UART2_CTS MCBSP3_CLKX MCBSP3_FSX MCBSP3_DR MCBSP1_DX MCBSP1_CLKX MCBSP1_FSX MCBSP1_DR MCBSP1_CLKR MCBSP1_FSR I2C2_SCL nRESET 2 4 6 8 10 12 14 16 18 20 22 24 26 28
J3
VIO_1V8 U3A MMC2_DAT7 MMC2_DAT6 MMC2_DAT5 MMC2_DAT4 MMC2_DAT3 MMC2_DAT2 MMC2_DAT1 MMC2_DAT0 MMC2_CMD MMC2_CLKO I2C2_SDA nUSB_DC_EN AE3 AF3 AH3 AE4 AF4 AG4 AH4 AH5 AG5 AE2
1 3 5 7 9 11 13 15 17 19 21 23 25 27
Processor
MMC2_DAT7 MMC2_DAT6 MMC2_DAT5 MMC2_DAT4 MMC2_DAT3 MMC2_DAT2 MMC2_DAT1 MMC2_DAT0 MMC2_CMD MMC2_CLK
To the Reset circuitry
HEADER 14X2
To the power circuitry
Figure 51. This allows any of the listed mux modes to be set on a pin by pin basis by writing to the pin mux register in software. Following is the legend for Table 22. Access to these other pins is not provided on the expansion connector. As the processor has a multiplexing feature.
Page 107 of 164
.0
The expansion header is provided to allow a limited number of functions to be added to the BeagleBoard via the addition of a daughtercard.1.
X= there is no signal connected when this mode is selected Z= this is the safe mode meaning neither input to output.24. multiple signals can be connected to certain pins to add additional options as it pertains to the signal available. This is the default mode on
power up.1 Processor Interface
The main purpose of the expansion connector is to route additional signals from the processor. Figure 51 is the design of the expansion connector and the interfaces to the processor. The first column is the pin number of the expansion connector.8V. Each pin can be set individually for a different mux mode. Exposure of these signals to a higher voltage will result in damage to the board and a voiding of the warranty. but it has no useful purpose without other pins being available.

The same restriction exits on this rail as mentioned in the USB section. Table 24 shows the options for P11 and Table 25 shows the options for P135.1.8V level signal. The purpose of this signal is to provide a means to control power circuitry on the expansion card to turn on and off the voltages. they can also be used for other functions on the board based on the pin mux setting of each pin.
7.24.25 LCD Expansion Header
If you choose not to use the LCD headers for access to the LCD signals or for the DVI-D interface.4 Reset
The nRESET signal is the main board reset signal. This insures that the power on the expansion board is turned on at the appropriate time.
7. All signals from the BeagleBoard are at 1. an additional delay may be needed to be added before the circuitry is activated. 7. The MUX: column indicates which MUX mode must be set for each pin to make the respective signals accessible on the pins of the processor. This rail is limited in the current it can supply from the TPS65950 and what remains from the current consumed by the BeagleBoard and is intended to be used to provide a rail for voltage level conversion only. When the board powers up.REF: BB_SRM_xM
GPT11_PWMEVT GPT10_PWMEVT
BeagleBoard-xM System Reference Manual
O O 10 8
Revision C. The amount of available power to an expansion board depends on the available power from the DC supply or the USB supply from the PC. After power up.5 Power Control
There is an additional open-drain signal on the connector called REGEN. It is not intended to power a lot of circuitry on the expansion board.0
PWM or event for GP timer 11 PWM or event for GP timer 10
7. this signal will act as an input to reset circuitry on the expansion board. The first is the VIO_1.24. P11 GPIO Signals MUX:0
DATA1
Pin#
3
Signal
DVI_DATA1
MUX:2
UART1_RTS
MUX:4
GPIO71
Page 110 of 164
.8V.
Table 24. Depending on what circuitry is provided on the expansion board. Refer to the processor and TPS65950 documentation for more information.8V rail which is supplied by the TPS65950. The other rail is the DC_5V.3 Power
The expansion connector provides two power rails. This signal is a 1.24. a system reset can be generated by the expansion board by taking this signal low.

Table 30.
7.
Page 114 of 164
. USB.26. so refer to the TPS65950 documentation before using this pin. or as a clock for the NTSC/PAL S-Video output.
7.4 HSUSB1 Signals
These signals are the other High Speed USB port found on the processor.
PIN 3 4 5 6 7 8 9 10 11 12 13 14
P17 High Speed USB Expansion Signals
I/0 I/O I/O I/O I/O I/O I/O I I/O I/O O I O PROC AF13 AH14 AE13 AH12 AG12 AH9 AG9 AF11 AE11 AE10 AF9 AF10DESCRIPTION Bidirectional Data Bidirectional Data Bidirectional Data Bidirectional Data Bidirectional Data Bidirectional Data Next signal Bidirectional Data Bidirectional Data 60MHZ Clock output Data direction signal Stop signal
SIGNAL HSUSB1_D6 HSUSB1_D3 HSUSB_D7 HSUSB1_D2 HSUSB1_D1 HSUSB1_D5 HSUSB1_NXT HSUSB1_D0 HSUSB1_D4 HSUSB1_CLK HSUSB1_DIR HSUSB1_STP
7.5 Alternate Clock
The SYS_ALTCLK signal can be used to provide an alternate system clock into the processor. Table 30 gives the signals that are used for this interface. This can be used for things such as the GPTIMERS.26. In order for these pins to be used. the pin mux must be set to Mode 3.6 HDQ 1-Wire
The HDQ/1-Wire module implements the hardware protocol of the master functions of the Benchmarq HDQ and the Dallas Semiconductor 1-Wire® protocols.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. These protocols use a single wire for communication between the master (HDQ/1-Wire controller) and the slaves (HDQ/1-Wire external compliant devices).26.1. It is the same interface that is used to communicate to the UBS PHY on the board.7 ADC
There is one A to D converter pin provided on the Auxiliary Expansion Header.26. There are voltage level restrictions to this pin.0
7. This pin is labeled AUX_ADC and connects to the ADCIN6 pin of the TPS65950 and can be controlled and read by the processor using the I2C1 interface. but a different port.

27
Audio Expansion Header
Also new to the –xM is the addition of the Audio Header that provides access to the McBSP2 bus that connects to the TPS65950.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. This is the primary audio bus for the processor. refer to Section 8.
7. For further information on these signals.8 GPIO Signals
Most of the signals can also be configured as either inputs or outputs from the processor.2
Page 115 of 164
.16.9 DMAREQ
Pin 16 of the expansion connector can also be configured for a DMAREQ pin.26.1.26.0
7. Refer to the processor Technical Reference Manual for more information on how to use this signal.
PIN 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SIGNAL GPIO_20 GPIO_21 GPIO_17 GPIO_16 GPIO_15 GPIO_19 GPIO_23 GPIO_14 GPIO_18 GPIO_13 GPIO_22 GPIO_12 GPIO_170 GPIO_57
P17 Auxiliary GPIO Signals
I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O PROC AF13 AH14 AE13 AH12 AG12 AH9 AG9 AF11 AE11 AE10 AF9 AF10J25 P8 DESCRIPTION General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output
7. Table 31 shows the GPIO pin options that can be used on each pin of the connector.
Table 31.

REF: BB_SRM_xM

BeagleBoard-xM System Reference Manual

Revision C.1.0

8.0

Connector Pinouts and Cables

This section provides a definition of the pinouts and cables to be used with all of the connectors and headers on the BeagleBoard. THERE ARE NO CABLES SUPPLIED WITH THE BEAGLEBOARD.

8.1

Power Connector

Figure 52 is a picture of the BeagleBoard power connector with the pins identified. The supply must have a 2.1mm center hot connector with a 5.5mm outside diameter.

Figure 52. Power Connector

The supply must be at least 1A with a maximum of 3A. If the expansion connector is used, more power will be required depending on the load of the devices connected to the expansion connector.

Page 116 of 164

REF: BB_SRM_xM

BeagleBoard-xM System Reference Manual

Revision C.1.0

8.2

USB OTG

Figure 53 is a picture of the BeagleBoard USB OTG connector with the pins identified.

Figure 53. USB OTG Connector

The shorting pads, J1, to convert the OTG port to a Host mode are found in Figure 54.

the BeagleBoard may not work if the display timing is not accepted by the display.1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. PLUG IN THE CABLE TO THE DISPLAY AND THEN POWER ON THE BEAGLEBOARD. It should also be noted that no audio will be provided over this interface. DVI-D Cable
In some cases.
Figure 57. Figure 57 is one of the cables that can be used to connect to an LCD monitor. DVI-D Cable
A standard HDMI cable may be used as well as long as it is used with an adapter if you are connecting to a monitor via the DVI-D port.
Page 120 of 164
.
Figure 58. Figure 58 shows this configuration.0
DO NOT PLUG IN THE DVI-D CONNECTOR TO A DISPLAY WITH THE BEAGLEBAORD POWERED ON. It some cases. the HDMI to HDMI connector could be used to connect direct to a monitor equipped with a HDMI port.

Figure 61 is the front of the camera module. The camera should face to the edge of the board (Left) when installed. The camera module is not supplied with the BeagleBoard.

Figure 61. Camera Module

Page 124 of 164

REF: BB_SRM_xM

BeagleBoard-xM System Reference Manual

Revision C.1.0

8.5.3

Audio McBSP2 Port

New to the –xM version is the addition of a four pin connector that provides access to the McBSP2 audio serial interface. While other McBSP ports can be used for audio, McBSP2 is the most desirable due its large buffers. Table 36 is the pin out of the connector.
Table 36. P10 McBSP2 Signals I/O
O O I O

83 Page 127 of 164
.5
LCD and Expansion Measurements
Figure 64 provides some of the dimensions that can assist in the location of the LCD headers. Top Mount LCD Adapter
Table 38. Table 38 provides the values for each lettered dimension.0
8.56 0.21 27.1.118 2.99 0.5.190 4.52 0.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. It is strongly recommended that the CAD data be used in order to determine their location exact.
Figure 64.296 7.
Connector Dimensions
Dimension A B C D
Inches Millimeters 1.

0
8.8V.
Buffer Logic LCD Connector
BeagleBoard
Adapter
Figure 65.6
Mounting Scenarios
This section provides a few possible mounting scenarios for the LCD connectors.1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.5. It will require that they be buffered in order to drive other voltage levels. It should be noted that the voltage level of these signals are 1. Bottom Mount LCD Adapter
Page 128 of 164
.
Figure 65 shows the board being mounted under the BeagleBoard.

Audio Out Connector
Page 130 of 164
.
Figure 69.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. Audio Out Plug
Figure 69 is the actual connector used on the BeagleBoard.0
8.1.
Figure 68.7
Audio Out
Figure 68 is the audio out jack required to connect to the BeagleBoard.

REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.
Figure 71. JTAG Cable Placement
Page 132 of 164
. JTAG 14 to 20 Pin Adapter
Figure 72 shows how the JTAG cable is to be routed when connected to the BeagleBoard.0
If a 20 pin connector is provided on the JTAG emulator.
Figure 72. You may also use emulators that are either equipped with a 14 pin connector or are universal in nature. then a 20 pin to 14 pin adapter must be used.1. Figure 71 shows an example of a 14 pin to 20 pin adapter.

INSTALLATION OF THE BATTERY BY THE USER IS AT THEIR OWN RISK.9
8. THIS DAMAGE IS NOT COVERED UNDER THE WARRANTY.1. This is a Lithium Rechargeable Battery with a 1mAH capacity.9. FAILURE TO FOLLOW THE INSTRUCTIONS CAN RESULT IN DAMAGE TO THE BOARD. BATTERY INSTALLATION IS THE SOLE RESPONSABILTY OF THE USER. Figure 73 is a picture of the battery. It is also possible that the user may choose to install a higher capacity Lithium battery.
Figure 73.2 Battery Installation
THE FOLLOWING STRUCTIONS ASSUME THE USER HAS PREVIOUS EXPERIENCE WITH BATTERIES.9. Optional Battery 8.0
8.1
Battery Installation
Battery
The board was designed to use the MS412FE-FL26E battery from Seiko Instruments.
Page 133 of 164
.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

Remove R65 from the board as shown on Figure 75.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. locate the positive (+) lead of the battery. Using Figure 73.0
Figure 74. Insert the (+) lead into the hole that is marked (+) on Figure 74. 1) 2) 3) 4) Remove all cables from the board.1. Resistor R65
Following are the steps required to install the battery.
Page 134 of 164
. Optional Battery Location
Figure 75.

REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. The concept behind BeagleBoard is that different features and functions can be added to BeagleBoard by bringing your own peripherals. Inclusion of any product in this section is not an endorsement of the product by Beagleboard.
All pricing information provided is subject to change and in most cases is likely to be lower depending on the products purchased and from where they are purchased. Covered in this section are the following accessories: o o o o o o o o DC Power Supplies Serial Ribbon cable USB Hubs USB Thumb Drives DVI-D Cables DVI-D Monitors SD/MMC Cards USB to Ethernet
Page 135 of 164
. but is provided as a convenience only to the users of the BeagleBoard-xM board. It is up to the user to find the appropriate drivers for each of these products.0
BeagleBoard Accessories
Throughout this manual various items are mentioned as not being provided with the standard BeagleBoard package or as options to extend the features of the BeagleBoard. This section covers these accessories and add-ons and provides information on where they may be obtained.1.org.
Inclusion of any products in this section does not guarantee that they will operate with all SW releases. This has several key advantages: o User can choose which peripherals to add. o User can choose the brand of peripherals based on driver availability and ability to acquire the particular peripheral o User can add these peripherals at a lower cost than if they were integrated into the BeagleBoard.org for an up to date listing of these peripherals. Please check BeagleBoard.0
9. Obviously things can change very quickly as it relates to devices that may be available. Information provided here is intended to expose the capabilities of what can be done with the BeagleBoard and how it can be expanded.

0 1. The amount specified is equal to that supplied by a USB port. The onboard USB hub and Ethernet do consume additional power and if you plan to load the USB Host ports.
Table 40.1. DC Power Supply
Page 136 of 164
. Supplies that provide additional current than what is specified can be used if additional current is needed for add on accessories.5 (minimum) 2.5mm Center hot
Unit V A
It is recommended that a supply higher than 1..
9. Table 40 provides the specifications for the BeagleBoard DC supply.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.
Table 41. more power will be required.
Figure 76.5A be used if higher current peripherals are expected to be used or if expansion boards are added.0
o USB to WiFi o USB Bluetooth o Expansion Cards
NO CABLES OR POWER SUPPLIES ARE PROVIDED WITH THE BEAGLEBOARD. Table 41 lists some power supplies that will work with the BeagleBoard.1
DC Power Supply
Tabletop or wall plug supplies can be used to power BeagleBoard. DC Power Supplies
Part # EPS050100-P6P DPS050200UPS-P5P-SZ
Manufacturer CUI CUI
Supplier Digi-Key Digi-Key
Price $7 $16
Figure 76 is a picture of the type of power supply that will be used on the BeagleBoard.1mm x 5. DC Power Supply Specifications
Specification Voltage Current Connector
Requirement 5.

DVI-D Monitors Tested
Manufacturer Dell Insignia Dell LG
Part Number 2407WFPb NS-LCD15 1708FP FLATRON W2243T
Status Tested Tested Tested Tested
DO NOT PLUG IN THE DVI-D CONNECTOR TO A DISPLAY WITH THE BEAGLEBAORD POWERED ON. Please check on BeagleBoard.org for an up to date listing of the DVI-D monitors as well as information on the availability of drivers. Table 42. The audio and encryption features of HDMI are not supported by the Beagle. timing data is collected from the monitor to enable the SW to adjust its timings. HDMI to DVI-D Cable
9. a HDMI to DVI-D cable is required. With the integrated EDID feature. Whether or not the Beagle will support those monitors is dependent on the timings that are used on the Beagle and those that are accepted by the monitor.1. Table 42 shows a short list of the monitors that have been tested to date on the BeagleBoard at the 1024x768 resolution. This may require a change in the software running on the Beagle.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.3
DVI-D Monitors
There are many monitors that can be used with the BeagleBoard. Figure 77 is a picture of a HDMI to DVI-D cable.
Figure 77.2
DVI Cables
In order to connect the DVI-D interface to a LCD monitor. PLUG IN THE CABLE TO THE DISPLAY AND THEN POWER ON THE BEAGLEBOARD.0
9. The digital portion of the DVI-D interface is compatible with HDMI and is electrically the same. A standard HDMI cable may be used to connect to the HDMI input of monitors.
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.

Please check BeagleBoard.
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. This will require a special cable to convert the miniAB connector to a Type A or a hub can also be used.org for an up to date listing of the USB to WiFi devices as well as information on the availability of drivers. Please check BeagleBoard.1.org for an up to date listing of the SD/MMC cards that have been tested as well as information on the availability of drivers if required.0
The analog portion of DVI which provides RGB analog type signals is not supported by the Beagle. These devices can easily add WiFi connectivity to BeagleBoard by using the USB OTG port in the host mode. Check BeagleBoard.org for information on devices that have drivers available for them.4
microSD Cards
Table 43 is a list of SD/MMC cards that have been tested on BeagleBoard. USB to WiFi
Table 44 provides a list of USB to WiFi adapters that could be used with the BeagleBoard. Table 43. You will need an active DVI-D to VGA adapter. Inclusion of these items in the table does not guarantee that they will work.5
USB to WiFi
There are several USB to WiFi adapters on the market and Figure 78 shows a few of these devices. Buying a DVI to VGA adapter connector will not work on a VGA display. These are provided as examples only.
9. SD/MMC Cards Tested
Manufacturer Patriot
Type 4GB
Part Number
Status Tested
9. but is provided as examples only.
Figure 78.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.

These are provided as examples only. Before purchasing a particular device.org for information on devices that have drivers available for them and their test status. USB to Bluetooth
Table 45 provides a list of USB to Bluetooth adapters that could be used with the BeagleBoard. but is provided as examples only.6
USB to Bluetooth
There are several USB to Bluetooth adapters on the market and Figure 79 shows a few of these devices.0
Table 44.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.org for an up to date listing of the USB to Bluetooth devices as well as information on the availability of drivers. These devices can easily add Bluetooth connectivity to BeagleBoard by using the USB OTG port in the host mode.
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. This will require a special cable to convert the miniAB connector to a Type A or a hub can also be used. Check BeagleBoard. please verify the availability of drivers for that device.
USB to WiFi Adapters
Product 4410-00-00AF HWUG1 TEW-429Uf
Manufacturer Zoom Hawkins Trendnet
Status Not Tested Not Tested Not Tested
It should be noted that the availability of Linux drivers for various WiFi devices is limited. Please check BeagleBoard.1. Inclusion of these items in the table does not guarantee that they will work.
9.
Figure 79.

0
10.0 Mechanical Information
10. the mounting holes and the replacement of the main expansion and LCD headers are the same as is found on the BeagleBoard board.
Figure 80.1. Figure 80 is the dimensions of the BeagleBoard.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. BeagleBoard Dimension Drawing
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. Despite the change in the overall dimensions of the board.1 BeagleBoard Dimensions
This section provides information on the mechanical aspect of the BeagleBoard.

but in order to be supported by the Software they must conform to these standards if such support is desired. Users are free to create their own cards for private or commercial use.2
BeagleBoard Expansion Card Design Information
This section provides information on what is required from a mechanical and electrical aspect to create expansion cards for the BeagleBoard that are designed to connect to the Expansion header on the BeagleBoard.
Figure 81.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. Figure 82 shows their location.
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.0
10.2.1 Mounting Method
The standard method to provide a daughtercard for the BeagleBoard is for it to be mounted UNDER the Beagle Board as described in Figure 81. The –xM has additional connectors on the back of the board. BeagleBoard Bottom Stacked Daughter Card
All BeagleBoard-xM produced will have the connectors pre mounted onto the bottom of the BeagleBoard as described above.1.
10.

2 Expansion EEPROM
All expansion cards designed for use with the BeagleBoard are required to have a EEPROM located on the board.1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. BeagleBoard-xM Expansion Headers
10. This is to allow for the identification of the card by the Software in order to set the pin muxing on the expansion connector to be compatible with the expansion card.2.
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. The schematic for the EEPROM is in Figure 83 below.0
Figure 82.

BeagleBoard Expansion Board EEPROM Schematic
The EEPROM must be write protected.
4.0402 1 2 R19
4.0402
Figure 83.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
VIO_1V8
Revision C. The EEPROM that is designated is the AT24C01 or ATC24C01B.1uf .0402 1 2 R20
VIO_1V8 U8 A0 A1 A2 1 2 3 4 A0 VCC A1 WP A2 SCL VSS SDA AT24C01 C28 8 7 6 5
BB_WP BB_I2C_SCL BB_I2C_SDA
TP7 TP 0. The EEPROM is to be connected to I2C2 as found on the main expansion connector. The AT24C01 is designated as “Not Recommended for New Design” but can still be used.0
4.7K.7K.1.5%. all of which can be used. It is suggested that a testpoint be used to allow for the WP to be disabled during test to allow the required data to be written to the EEPROM. o o o o o o TSSOP 8 PDIP 8 UDFN 8 SOIC 8 SOT23 5 dBGA2 8
The contents of the EEPROM are not specified in this document.0402 2 R21 1
Page 144 of 164
.5%.7K. The AT24C01B is the replacement part and is available in several different packages.5%.CER.

Others may be at different voltage levels depending on the same factor. Figure 84 shows the top side test points.0
11.
Figure 84.
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.1.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. BeagleBoard Voltage Access Points
Some of these voltages may not be present depending on the state of the TWL4030 as set by the processor.0 Board Verification Test Points
There are several test points that may be useful if it becomes necessary to troubleshoot the BeagleBoard-xM board.

0
11. Verify that the Power LED is on.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. the PC may have shut down the voltage due to excessive current as related to what it is capable of providing. The expect 100mA max.2
Troubleshooting Guide
Table 47 provides a list of possible failure modes and conditions and suggestions on how to diagnose them and ultimate determine whether the HW is operational or not. processor is booting. If a 60 is displayed over the serial cable. Incorrect serial cable configuration. If running on a DC supply make sure that voltage is being supplied.
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. If it the level is below 4.
USB Host Connection Issues via OTG.
JTAG interface needs to be reset. Issue could be the SD/MMC card. Remove the USB cable and re insert. Make sure the SD/MMC card is installed all they way into the connector. Verify straight thru cable configuration. Reset the BeagleBoard. UBoot does not start. Measure the voltage at the card to determine the voltage drop across the cable.
Table 47. Troubleshooting
Symptoms
Possible Problem
JTAG does not connect.35V. Make sure the card is formatted correctly and that the MLO file is the first file written to the SD card.
Cheap USB Cable. the USB power is not guaranteed to work. and no activity on the RS232 monitor.
Action If off and running over USB. OTG cables are typically not designed for higher current.1.

Table 48 provides a list of the know issues on the BeagleBoard.1.0
12.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.0 Known Issues
This section provides information on any known issues with the BeagleBoard HW and the overall status. Known Issues
Affected Revision
A A
Issue
DVI Powerdown USB Hub reset
Description
DVI power down signal is not operational Reset signal to hub is not operational
Workaround
None Hub can be powered off and on to create a reset scenario
Final Fix
B
No Plan
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.
Table 48.

THERE IS NO WARRANTY FOR THE DESIGN MATERIALS. but for the latest documentation be sure and check BeagleBoard. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE DESIGN MATERIALS “AS IS” WITHOUT WARRANTY OF ANY KIND. Only “community” support is allowed via resources at BeagleBoard. TO THE EXTENT PERMITTED BY APPLICABLE LAW. these design materials may be totally unsuitable for any purposes. INCLUDING. We mean it. OrCAD source files are provided for BeagleBoard on BeagleBoard. SHOULD THE DESIGN MATERIALS PROVE DEFECTIVE. This manual will be periodically updated.0 Schematics
The following pages contain the PDF schematics for the BeagleBoard. http://beagleboard.org for the latest schematics. THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE DESIGN MATERIALS IS WITH YOU. EITHER EXPRESSED OR IMPLIED.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C.1.
Page 152 of 164
.org/hardware/design These design materials are *NOT SUPPORTED* and DO NOT constitute a reference design. BUT NOT LIMITED TO.0
14. YOU ASSUME THE COST OF ALL NECESSARY SERVICING.org/discuss.org at the following link. REPAIR OR CORRECTION.

EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE DESIGN MATERIALS “AS IS” WITHOUT WARRANTY OF ANY KIND.org at the following location: http://beagleboard.org/discuss.0 Bills of Material
The Bill of Material for the Beagle Board is provided at BeagleBoard. THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. EITHER EXPRESSED OR IMPLIED. THERE IS NO WARRANTY FOR THE DESIGN MATERIALS.
Page 163 of 164
. BUT NOT LIMITED TO.0
15. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE DESIGN MATERIALS IS WITH YOU.1.org/hardware/design
These design materials are *NOT SUPPORTED* and DO NOT constitute a reference design. INCLUDING. We mean it.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. these design materials may be totally unsuitable for any purposes. TO THE EXTENT PERMITTED BY APPLICABLE LAW. SHOULD THE DESIGN MATERIALS PROVE DEFECTIVE. Only “community” support is allowed via resources at BeagleBoard. REPAIR OR CORRECTION. YOU ASSUME THE COST OF ALL NECESSARY SERVICING.

these design materials may be totally unsuitable for any purposes. We mean it. Gerber files and Allegro source files are available on BeagleBoard. REPAIR OR CORRECTION. SHOULD THE DESIGN MATERIALS PROVE DEFECTIVE.0 PCB Information
The following pages contain the PDF PCB layers for the BeagleBoard. THERE IS NO WARRANTY FOR THE DESIGN MATERIALS. EITHER EXPRESSED OR IMPLIED.REF: BB_SRM_xM
BeagleBoard-xM System Reference Manual
Revision C. TO THE EXTENT PERMITTED BY APPLICABLE LAW. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE DESIGN MATERIALS IS WITH YOU.
Page 164 of 164
.0
16. Only “community” support is allowed via resources at BeagleBoard.1. THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. BUT NOT LIMITED TO. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE DESIGN MATERIALS “AS IS” WITHOUT WARRANTY OF ANY KIND. INCLUDING.org/discuss. YOU ASSUME THE COST OF ALL NECESSARY SERVICING.org at the following address. http://beagleboard.org/hardware/design
These design materials are *NOT SUPPORTED* and DO NOT constitute a reference design.